oSIST prEN 304 633 V1.0.0:2026

• Abstract:

  DEN/CYBER-EUS-004

• Status: Not Published
• Public Enquiry End Date: 30-Sep-2026
• ICS: 35.030 - IT Security
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 03-Aug-2026
• Due Date: 21-Dec-2026
• Ref Project: ETSI EN 304 633 V1.0.0 (2026-07) - Cyber Security (CYBER); CRA; Cybersecurity requirements for Internet connected toys covered by Directive 2009/48/EC that have social interactive features (e.g. speaking or filming) or that have location tracking features

Overview

oSIST prEN 304 633 V1.0.0:2026, developed by SIST and ETSI, specifies cybersecurity requirements for internet connected toys as covered by Directive 2009/48/EC. This European standard is critical for manufacturers, importers, and distributors of toys featuring social interactive functions-such as speaking, filming, or location tracking. The aim is to provide a harmonized approach to cyber protection, addressing the growing risks associated with smart and connected toys in modern households.

The standard outlines both technical and organizational measures needed to secure these products, ensuring the privacy, security, and protection of children using internet-enabled toys. Applying these requirements supports legal compliance under the upcoming EU Cyber Resilience Act (CRA) and strengthens consumer trust through robust cybersecurity practices.

Key Topics

oSIST prEN 304 633 V1.0.0:2026 covers a wide range of critical cybersecurity topics for internet connected toys:

• Appropriate Cybersecurity Level
  Defines minimum security requirements tailored to the risk level and functions of each toy.

• Secure by Default Configuration
  Sets out expectations for default settings that prioritize safety and privacy, with dedicated parental controls and safe authentication methods.

• Vulnerability Management
  Mandates mechanisms for identifying, reporting, and resolving known vulnerabilities prior to and during product usage.

• Security Updates
  Requires secure, timely deployment of software updates, including automated update processes and notification systems.

• Authentication and Access Control
  Ensures functions that could cause harm or compromise privacy are protected with robust authentication and least privilege authorization principles.

• Confidentiality and Data Integrity
  Addresses protection of confidential data and integrity requirements for storage and communication processes.

• Data Minimization
  Imposes strict limits on the collection and processing of user data to only what is necessary for toy operation.

• Availability and Resilience
  Specifies requirements for maintaining service continuity and recovering from power or network loss.

• Attack Surface and Exploit Mitigation
  Reduces the risk of exploitation by minimizing exposed interfaces, enforcing validation and sanitization, and securing device boot sequences.

• Monitoring and Factory Reset
  Details event logging, configuration, and functionality for secure factory reset and user data removal.

Applications

This standard is directly applicable to:

• Manufacturers of Connected Toys
  Ensures product design and development adheres to EU cybersecurity expectations, facilitating market access and legal compliance.

• Importers and Distributors
  Assists in selecting compliant toys, reducing liability and market risk.

• Conformity Assessment Bodies
  Provides clear assessment criteria and technical benchmarks for evaluating toy cybersecurity.

• Technical Integrators
  Enables integration of compliant social, audio, video, or location tracking features within toys.

• Product Managers and Compliance Officers
  Offers comprehensive checklists and controls for ensuring ongoing security in line with EU legislation.

Adhering to this standard not only safeguards sensitive data but also strengthens parental confidence and brand value, supporting sustainable growth in the internet connected toys sector.

Related Standards

oSIST prEN 304 633 V1.0.0:2026 aligns with and complements other key standards and regulations, including:

• Directive 2009/48/EC (Toy Safety Directive)
  Lays the regulatory foundation for toy safety in the EU.

• EU Cyber Resilience Act (CRA)
  Imposes mandatory cybersecurity requirements on connected devices, including toys.

• IEC 62443
  Addresses industrial cybersecurity measures relevant to the broader IoT ecosystem.

• ETSI EN 303 645
  Specifies baseline cybersecurity requirements for consumer IoT devices.

• GDPR (General Data Protection Regulation)
  Sets data privacy protections highly relevant to personal data processed by connected toys.

Ensuring compatibility and harmonization with these related standards supports a holistic approach to cybersecurity for consumer-connected devices.

Keywords: internet connected toys, cybersecurity, EU Cyber Resilience Act, toy safety, data protection, privacy, social interactive toys, location tracking, child safety, security compliance, conformity assessment, IoT, SIST, ETSI

Draft ETSI EN 304 633 V1.0.0 (2026-07)

HARMONISED EUROPEAN STANDARD
Cyber Security (CYBER);
CRA;
Cybersecurity requirements for internet connected toys

2 Draft ETSI EN 304 633 V1.0.0 (2026-07)

Reference
DEN/CYBER-EUS-004
Keywords
CRA, cybersecurity
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part of this document may be reproduced in any form, by any means and in any media, without the prior written
authorization of ETSI and except as expressly permitted below.
By way of exception and when the document is a normative deliverable (European Standard (EN),
Technical Specification (TS), Group Specification (GS) or ETSI Standard (ES)), ETSI authorizes to reproduce
and incorporate into products, services and technical documentation only those extracts (e.g. templates) that are strictly
necessary for the technical implementation of the normative deliverable, to ensure compliance with the latter.
Nothing in this notice shall be construed as limiting any mandatory exceptions to copyright provided by applicable law.

© ETSI 2026.
All rights reserved.
ETSI
3 Draft ETSI EN 304 633 V1.0.0 (2026-07)
Contents
Intellectual Property Rights . 10
Foreword. 10
Modal verbs terminology . 11
Introduction . 11
1 Scope . 12
2 References . 12
2.1 Normative references . 12
2.2 Informative references . 12
3 Definition of terms, symbols and abbreviations . 13
3.1 Terms . 13
3.1.1 Architecture related terms . 13
3.1.2 Asset categories . 14
3.1.3 Communication types . 14
3.1.4 Data assets . 15
3.1.5 Data related terms . 16
3.1.6 Function assets . 17
3.1.7 Function related terms . 18
3.1.8 Interface . 22
3.1.9 Operational environments . 22
3.1.10 Users. 23
3.2 Symbols . 23
3.3 Abbreviations . 24
4 Product context . 26
4.1 Product functions . 26
4.1.1 Function assets . 26
4.1.2 Data assets . 26
4.2 Product architecture . 27
4.3 Operational environment . 28
4.3.1 General description . 28
4.3.2 Physical/Hardware environment . 28
4.3.3 Logical/Software environment . 28
4.3.4 Connectivity aspects . 28
4.4 Distribution of security functions . 29
4.5 Users . 29
4.6 Use cases . 29
5 Technical requirements for products . 29
5.1 Introduction - Applicability of the requirements . 29
5.2 Appropriate level of cybersecurity . 30
5.2.0 Introduction on appropriate level of cybersecurity requirements . 30
5.2.1 [USERNOT-NOSECFUC] User notifications on not available security functions . 30
5.2.2 [USERNOT-SECREL] Language and representation for security-related user notifications . 30
5.2.3 [GUI-SECCONF] Visual representation of security-related configuration via GUIs . 30
5.2.4 [BACKUP-TRANS] Data transfer mechanisms for loss sensitive data . 30
5.2.5 [BACKUP-AUTOTRANS] Automatic data transfer mechanisms for loss sensitive data . 30
5.2.6 [BACKUP-EXPORT] Data export mechanisms for loss sensitive data . 30
5.3 No known exploitable vulnerabilities . 31
5.3.0 Introduction on no known exploitable vulnerabilities . 31
5.3.1 [NKEV-MKAV] No known exploitable vulnerabilities . 31
5.3.2 [NKEV-INIT-UDP] Initial security update before or during first use . 31
5.4 Secure by default configuration . 31
5.4.0 Introduction on secure by default configuration. 31
5.4.1 [SDC-AUM-FH] Default configuration of authentication for functions whose use can cause harm . 31
5.4.2 [SDC-SUM-AUTO] Default configuration of automated security updates . 32
ETSI
4 Draft ETSI EN 304 633 V1.0.0 (2026-07)
5.4.3 [SDC-SUM-NOTIF] Default configuration of update notifications . 32
5.4.4 [SDC-FRM] Factory reset to restore the default state . 32
5.4.5 [SDC-PARCONT] Default configuration for parental control . 32
5.4.6 [SDC-MON-HANDLE] Handling of events by default . 33
5.4.7 [CRY-GENERAL] General requirements related to cryptography . 33
5.4.8 [CRY-CCK-PRE-LEN] Key size of preinstalled long term confidential cryptographic keys . 33
5.4.9 [CRY-CCK-GEN] Default key size of generated long term confidential cryptographic keys . 33
5.4.10 [CRY-PW-PRE-COM] Complexity of preinstalled passwords . 33
5.4.11 [CRY-PW-GEN-COM] Default complexity of generated passwords . 33
5.4.12 [CRY-PW-USR-COM] Recommended complexity of user chosen passwords . 34
5.5 Security updates . 34
5.5.0 Introduction on security updates . 34
5.5.1 [SU-SUPPORT] Secure software update mechanism . 34
5.5.2 [SU-PROVIDE] Secure software update mechanism for core components . 34
5.5.3 [SU-AUTO] Automated security updates . 34
5.5.4 [SU-DISABLE-AUTO] Option to disable automated security updates . 35
5.5.5 [SU-POSTPONE-AUTO] Option to postpone automated security updates. 35
5.5.6 [SU-NOTIF] Update notifications . 35
5.6 Authentication and access control . 35
5.6.0 Introduction on authentication and access control . 35
5.6.1 [ACM-FH] Access control for functions whose use can cause harm . 35
5.6.2 [PARCONT] Support of parental control. 36
5.6.3 [AUM-FH] Authentication for functions whose use can cause harm . 36
5.6.4 [AUTHZ-LP] Least privilege in authorisation policies . 37
5.6.5 [AUTHZ-R] Revocability of granted permissions . 37
5.6.6 [AUTHZ-PC] Authorisation policies for parental control. 37
5.7 Confidentiality protection . 37
5.7.0 Introduction on confidentiality protection . 37
5.7.1 [CONF-SSM] Confidentiality protecting persistent storage for confidential data . 38
5.7.2 [CONF-COM] Communication of confidential data . 38
5.8 Integrity protection . 39
5.8.0 Introduction on integrity protection . 39
5.8.1 [INT-SSM] Integrity protecting persistent storage for integrity relevant data . 39
5.8.2 [INT-COM] Communication of integrity relevant data . 39
5.8.3 [INT-SWPCK] Software package verification . 40
5.9 Data minimisation . 40
5.9.0 Introduction on data minimisation . 40
5.9.1 [DMIN-DJST] Minimise processed data. 40
5.10 Availability protection . 41
5.10.0 Introduction on availability protection . 41
5.10.1 [AVAI-TIME-RECO-POW] Restoration after loss of power . 41
5.10.2 [AVAI-TIME-NETW] Local operation . 41
5.10.3 [AVAI-TIME-RECO-NETW] Restoration after loss of network connection . 41
5.10.4 [AVAI-TIME-OUTA-NOT] Notify non-availability . 41
5.10.5 [AVAI-TIME-PREV-NOT] Notify upcoming limitation . 41
5.10.6 [AVAI-TIME-NET-PRIO] Network prioritisation . 42
5.10.7 [AVAI-TIME-RES-PRIO] Power resource prioritisation . 42
5.10.8 [AVAI-TIME-DOS-RATE] Incoming rate limiting . 42
5.10.9 [AVAI-SUM-SCHEDULE] Scheduling of updates . 42
5.11 Non-interference . 42
5.11.0 Introduction on non-interference . 42
5.11.1 [NOINF-AMP] Amplification control . 42
5.12 Attack surface minimisation . 43
5.12.0 Introduction on attack surface minimisation . 43
5.12.1 [LAS-INVAL] Validation of external data input . 43
5.12.2 [LAS-INSAN] Sanitisation of external data input . 43
5.12.3 [LAS-PHY-INF] Only necessary physical interfaces . 43
5.12.4 [LAS-LOGIC-INF] Only necessary logical interfaces active by default . 43
5.12.5 [LAS-APP] Only necessary apps by default . 43
5.12.6 [LAS-SBOOT] Secure boot . 43
5.13 Exploit mitigation . 44
5.13.0 Introduction on exploit mitigation . 44
ETSI
5 Draft ETSI EN 304 633 V1.0.0 (2026-07)
5.13.1 [PRIV-DATA-HIGH] Privileged access on impact class high data assets . 44
5.13.2 [PRIV-FUNC-HIGH] Privileged access on impact class high function assets . 44
5.14 Monitoring . 44
5.14.0 Introduction on monitoring . 44
5.14.1 [MON-LOW] Events to log for low risk internet connected toy . 44
5.14.2 [MON-MEDIUM] Events to log for medium risk internet connected toy . 45
5.14.3 [MON-HIGH] Events to log for high risk internet connected toy . 45
5.14.4 [MON-HANDLE] Handling of events . 45
5.14.5 [LOG-TIME] Timestamps for logs . 45
5.14.6 [LOG-TIME-HIGH] Real-time timestamps for logs . 46
5.14.7 [LOG-STORE-MEDIUM] Logfile persistence for medium risk internet connected toy . 46
5.14.8 [LOG-STORE-HIGH] Logfile persistence for high risk internet connected toy . 46
5.14.9 [LOG-CONFIG] Configuration of logging mechanisms . 46
5.15 Factory reset and data portability . 46
5.15.0 Introduction on factory reset and data portability . 46
5.15.1 [DLM-PERM] Permanent removal of user-related data . 47
6 Assessment criteria for compliance with technical requirements . 47
6.1 General . 47
6.2 Appropriate level of cybersecurity . 49
6.2.1 Assessment criteria for [USERNOT-NOSECFUC] . 49
6.2.2 Assessment criteria for [USERNOT-SECREL] . 49
6.2.3 Assessment criteria for [GUI-SECCONF] . 50
6.2.4 Assessment criteria for [BACKUP-TRANS] . 51
6.2.5 Assessment criteria for [BACKUP-AUTOTRANS] . 53
6.2.6 Assessment criteria for [BACKUP-EXPORT]. 54
6.3 No known exploitable vulnerabilities . 55
6.3.1 Assessment criteria for [NKEV-MKAV] . 55
6.3.2 Assessment criteria for [NKEV-INIT-UDP] . 56
6.4 Secure by default configuration . 58
6.4.1 Assessment criteria for [SDC-AUM-FH] . 58
6.4.2 Assessment criteria for [SDC-SUM-AUTO] . 59
6.4.3 Assessment criteria for [SDC-SUM-NOTIF] . 60
6.4.4 Assessment criteria for [SDC-FRM] . 61
6.4.5 Assessment criteria for [SDC-PARCONT] . 62
6.4.6 Assessment criteria for [SDC-MON-HANDLE] . 63
6.4.7 Assessment criteria for [CRY-GENERAL] . 64
6.4.8 Assessment criteria for [CRY-CCK-PRE-LEN] . 65
6.4.9 Assessment criteria for [CRY-CCK-GEN] . 65
6.4.10 Assessment criteria for [CRY-PW-PRE-COM] . 66
6.4.11 Assessment criteria for [CRY-PW-GEN-COM] . 67
6.4.12 Assessment criteria for [CRY-PW-USR-COM]. 68
6.5 Security updates . 70
6.5.1 Assessment criteria for [SU-SUPPORT]. 70
6.5.2 Assessment criteria for [SU-PROVIDE] . 71
6.5.3 Assessment criteria for [SU-AUTO] . 72
6.5.4 Assessment criteria for [SU-DISABLE-AUTO] . 73
6.5.5 Assessment criteria for [SU-POSTPONE-AUTO]. 74
6.5.6 Assessment criteria for [SU-NOTIF] . 75
6.6 Authentication and access control . 76
6.6.1 Assessment criteria for [ACM-FH] . 76
6.6.2 Assessment criteria for [PARCONT] . 78
6.6.3 Assessment criteria for [AUM-FH] . 79
6.6.4 Assessment criteria for [AUTHZ-LP] . 80
6.6.5 Assessment criteria for [AUTHZ-R] . 81
6.6.6 Assessment criteria for [AUTHZ-PC] . 82
6.7 Confidentiality protection . 82
6.7.1 Assessment criteria for [CONF-SSM] . 82
6.7.2 Assessment criteria for [CONF-COM] . 84
6.8 Integrity protection . 85
6.8.1 Assessment criteria for [INT-SSM] . 85
6.8.2 Assessment criteria for [INT-COM] . 87
ETSI
6 Draft ETSI EN 304 633 V1.0.0 (2026-07)
6.8.3 Assessment criteria for [INT-SWPCK] . 88
6.9 Data minimisation . 89
6.9.1 Assessment criteria for [DMIN-DJST] . 89
6.10 Availability protection . 90
6.10.1 Assessment criteria for [AVAI-TIME-RECO-POW] . 90
6.10.2 Assessment criteria for [AVAI-TIME-NETW] . 92
6.10.3 Assessment criteria for [AVAI-TIME-RECO-NETW] . 93
6.10.4 Assessment criteria for [AVAI-TIME-OUTA-NOT] . 95
6.10.5 Assessment criteria for [AVAI-TIME-PREV-NOT] . 96
6.10.6 Assessment criteria for [AVAI-TIME-NET-PRIO] . 98
6.10.7 Assessment criteria for [AVAI-TIME-RES-PRIO] . 99
6.10.8 Assessment criteria for [AVAI-TIME-DOS-RATE] . 100
6.10.9 Assessment criteria for [AVAI-SUM-SCHEDULE] . 101
6.11 Non-interference . 102
6.11.1 Assessment criteria for [NOINF-AMP] . 102
6.12 Attack surface minimisation . 103
6.12.1 Assessment criteria for [LAS-INVAL] . 103
6.12.2 Assessment criteria for [LAS-INSAN] . 105
6.12.3 Assessment criteria for [LAS-PHY-INF] . 106
6.12.4 Assessment criteria for [LAS-LOGIC-INF] . 106
6.12.5 Assessment criteria for [LAS-APP] . 107
6.12.6 Assessment criteria for [LAS-SBOOT]. 108
6.13 Exploit mitigation . 109
6.13.1 Assessment criteria for [PRIV-DATA-HIGH] . 109
6.13.2 Assessment criteria for [PRIV-FUNC-HIGH] . 111
6.14 Monitoring . 112
6.14.1 Assessment criteria for [MON-LOW] . 112
6.14.2 Assessment criteria for [MON-MEDIUM] . 113
6.14.3 Assessment criteria for [MON-HIGH] . 113
6.14.4 Assessment criteria for [MON-HANDLE] . 114
6.14.5 Assessment criteria for [LOG-TIME] . 116
6.14.6 Assessment criteria for [LOG-TIME-HIGH] . 117
6.14.7 Assessment criteria for [LOG-STORE-MEDIUM] . 118
6.14.8 Assessment criteria for [LOG-STORE-HIGH] . 119
6.14.9 Assessment criteria for [LOG-CONFIG] . 120
6.15 Factory reset and data portability . 121
6.15.1 Assessment criteria for [DLM-PERM] . 121
Annex A (informative): Relationship between the present document and the essential
cybersecurity requirements of EU Regulation (EU) 2024/2847 . 124
Annex B (informative): Security analysis. 128
B.1 General . 128
B.2 Assets . 128
B.3 Risk factors . 128
B.4 Assumptions . 128
B.5 Threats . 129
B.6 Relationship between the present document and the covered/not covered cybersecurity risks . 129
B.7 Guidance for determining impact classes . 132
B.7.1 General . 132
B.7.2 Confidential data . 132
B.7.3 Loss sensitive data . 133
B.7.4 Time sensitive function . 133
B.7.5 Integrity relevant data and integrity relevant function . 134
Annex C: Void . 135
ETSI
7 Draft ETSI EN 304 633 V1.0.0 (2026-07)
Annex D (normative): Relationship between specific data and functions assets covered by
the present document to impact classes for generic asset categories . 136
D.1 Data assets . 136
D.2 Function assets . 137
Annex E (normative): Protection measures . 139
E.1 Authentication mechanism strength . 139
E.1.1 [AUM-FH] Authentication for functions whose use can cause harm . 139
E.1.1.1 General . 139
E.1.1.2 [AUM-E-I-Basic] AUTH.Basic inherence based SFA . 139
E.1.1.3 [AUM-E-K-Basic] AUTH.Basic knowledge based SFA . 139
E.1.1.4 [AUM-E-I-Normal] AUTH.Normal inherence based SFA . 139
E.1.1.5 [AUM-E-K-Normal] AUTH.Normal knowledge based SFA . 139
E.1.1.6 [AUM-E-P-Normal] AUTH.Normal possession based SFA . 139
E.1.1.7 [AUM-E-MFA-Normal] AUTH.Normal MFA . 140
E.1.1.8 [AUM-E-I-Enhanced] AUTH.Enhanced inherence based SFA . 140
E.1.1.9 [AUM-E-K-Enhanced] AUTH.Enhanced knowledge based SFA . 140
E.1.1.10 [AUM-E-P-Enhanced] AUTH.Enhanced possession based SFA . 140
E.1.1.11 [AUM-E-MFA-Enhanced] AUTH.Enhanced MFA . 140
E.1.1.12 [AUM-E-I-Strong] AUTH.Strong inherence based SFA . 141
E.1.1.13 [AUM-E-P-Strong] AUTH.Strong possession based SFA . 141
E.1.1.14 [AUM-E-MFA-Strong] AUTH.Strong MFA . 141
E.1.1.15 [AUM-E-Replay] AUTH.Normal, AUTH.Enhanced and AUTH.Strong replay protection . 141
E.1.1.16 [AUM-E-PitM] AUTH.Normal, AUTH.Enhanced and AUTH.Strong person in the middle
protection . 142
E.1.2 Assessment for [AUM-FH] authentication mechanism strength . 142
E.1.2.1 General . 142
E.1.2.2 Assessment criteria for [AUM-E-I-Basic] . 142
E.1.2.3 Assessment criteria for [AUM-E-K-Basic] . 143
E.1.2.4 Assessment criteria for [AUM-E-I-Normal] . 144
E.1.2.5 Assessment criteria for [AUM-E-K-Normal] . 145
E.1.2.6 Assessment criteria for [AUM-E-P-Normal] . 145
E.1.2.7 Assessment criteria for [AUM-E-MFA-Normal] . 147
E.1.2.8 Assessment criteria for [AUM-E-I-Enhanced] . 148
E.1.2.9 Assessment criteria for [AUM-E-K-Enhanced] . 149
E.1.2.10 Assessment criteria for [AUM-E-P-Enhanced] . 150
E.1.2.11 Assessment criteria for [AUM-E-MFA-Enhanced] . 152
E.1.2.12 Assessment criteria for [AUM-E-I-Strong] . 153
E.1.2.13 Assessment criteria for [AUM-E-P-Strong] . 154
E.1.2.14 Assessment criteria for [AUM-E-MFA-Strong]. 155
E.1.2.15 Assessment criteria for [AUM-E-Replay] . 156
E.1.2.16 Assessment criteria for [AUM-E-PitM] . 157
E.2 Integrity protection strength . 158
E.2.1 [INT-SSM] Integrity protecting persistent storage for integrity relevant data . 158
E.2.1.1 General . 158
E.2.1.2 [INT-SSM-E-Basic] INT.SSM.Basic integrity protecting secure storage mechanism . 158
E.2.1.3 [INT-SSM-E-Normal] INT.SSM.Normal integrity protecting secure storage mechanism . 159
E.2.1.4 [INT-SSM-E-Enhanced] INT.SSM.Enhanced integrity protecting secure storage mechanism . 159
E.2.1.5 [INT-SSM-E-Strong] INT.SSM.Strong integrity protecting secure storage mechanism . 159
E.2.2 Assessment for integrity protecting secure storage mechanism strength . 159
E.2.2.1 General . 159
E.2.2.2 Assessment criteria for [INT-SSM-E-Basic] . 159
E.2.2.3 Assessment criteria for [INT-SSM-E-Normal] .
...

SLOVENSKI STANDARD
01-september-2026
Kibernetska varnost (CYBER) - CRA - Zahteve za kibernetsko varnost za igrače,
povezane z internetom, ki jih zajema direktiva 2009/48/ES in imajo funkcije
socialne interakcije (npr. govorjenje ali snemanje) ali funkcije sledenja lokaciji
Cyber Security (CYBER) - CRA - Cybersecurity requirements for Internet connected toys
covered by Directive 2009/48/EC that have social interactive features (e.g. speaking or
filming) or that have location tracking features
Ta slovenski standard je istoveten z: ETSI EN 304 633 V1.0.0 (2026-07)
ICS:
35.030 Informacijska varnost IT Security
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Draft ETSI EN 304 633 V1.0.0 (2026-07)

HARMONISED EUROPEAN STANDARD
Cyber Security (CYBER);
CRA;
Cybersecurity requirements for internet connected toys

2 Draft ETSI EN 304 633 V1.0.0 (2026-07)

Reference
DEN/CYBER-EUS-004
Keywords
CRA, cybersecurity
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part of this document may be reproduced in any form, by any means and in any media, without the prior written
authorization of ETSI and except as expressly permitted below.
By way of exception and when the document is a normative deliverable (European Standard (EN),
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ETSI
3 Draft ETSI EN 304 633 V1.0.0 (2026-07)
Contents
Intellectual Property Rights . 10
Foreword. 10
Modal verbs terminology . 11
Introduction . 11
1 Scope . 12
2 References . 12
2.1 Normative references . 12
2.2 Informative references . 12
3 Definition of terms, symbols and abbreviations . 13
3.1 Terms . 13
3.1.1 Architecture related terms . 13
3.1.2 Asset categories . 14
3.1.3 Communication types . 14
3.1.4 Data assets . 15
3.1.5 Data related terms . 16
3.1.6 Function assets . 17
3.1.7 Function related terms . 18
3.1.8 Interface . 22
3.1.9 Operational environments . 22
3.1.10 Users. 23
3.2 Symbols . 23
3.3 Abbreviations . 24
4 Product context . 26
4.1 Product functions . 26
4.1.1 Function assets . 26
4.1.2 Data assets . 26
4.2 Product architecture . 27
4.3 Operational environment . 28
4.3.1 General description . 28
4.3.2 Physical/Hardware environment . 28
4.3.3 Logical/Software environment . 28
4.3.4 Connectivity aspects . 28
4.4 Distribution of security functions . 29
4.5 Users . 29
4.6 Use cases . 29
5 Technical requirements for products . 29
5.1 Introduction - Applicability of the requirements . 29
5.2 Appropriate level of cybersecurity . 30
5.2.0 Introduction on appropriate level of cybersecurity requirements . 30
5.2.1 [USERNOT-NOSECFUC] User notifications on not available security functions . 30
5.2.2 [USERNOT-SECREL] Language and representation for security-related user notifications . 30
5.2.3 [GUI-SECCONF] Visual representation of security-related configuration via GUIs . 30
5.2.4 [BACKUP-TRANS] Data transfer mechanisms for loss sensitive data . 30
5.2.5 [BACKUP-AUTOTRANS] Automatic data transfer mechanisms for loss sensitive data . 30
5.2.6 [BACKUP-EXPORT] Data export mechanisms for loss sensitive data . 30
5.3 No known exploitable vulnerabilities . 31
5.3.0 Introduction on no known exploitable vulnerabilities . 31
5.3.1 [NKEV-MKAV] No known exploitable vulnerabilities . 31
5.3.2 [NKEV-INIT-UDP] Initial security update before or during first use . 31
5.4 Secure by default configuration . 31
5.4.0 Introduction on secure by default configuration. 31
5.4.1 [SDC-AUM-FH] Default configuration of authentication for functions whose use can cause harm . 31
5.4.2 [SDC-SUM-AUTO] Default configuration of automated security updates . 32
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4 Draft ETSI EN 304 633 V1.0.0 (2026-07)
5.4.3 [SDC-SUM-NOTIF] Default configuration of update notifications . 32
5.4.4 [SDC-FRM] Factory reset to restore the default state . 32
5.4.5 [SDC-PARCONT] Default configuration for parental control . 32
5.4.6 [SDC-MON-HANDLE] Handling of events by default . 33
5.4.7 [CRY-GENERAL] General requirements related to cryptography . 33
5.4.8 [CRY-CCK-PRE-LEN] Key size of preinstalled long term confidential cryptographic keys . 33
5.4.9 [CRY-CCK-GEN] Default key size of generated long term confidential cryptographic keys . 33
5.4.10 [CRY-PW-PRE-COM] Complexity of preinstalled passwords . 33
5.4.11 [CRY-PW-GEN-COM] Default complexity of generated passwords . 33
5.4.12 [CRY-PW-USR-COM] Recommended complexity of user chosen passwords . 34
5.5 Security updates . 34
5.5.0 Introduction on security updates . 34
5.5.1 [SU-SUPPORT] Secure software update mechanism . 34
5.5.2 [SU-PROVIDE] Secure software update mechanism for core components . 34
5.5.3 [SU-AUTO] Automated security updates . 34
5.5.4 [SU-DISABLE-AUTO] Option to disable automated security updates . 35
5.5.5 [SU-POSTPONE-AUTO] Option to postpone automated security updates. 35
5.5.6 [SU-NOTIF] Update notifications . 35
5.6 Authentication and access control . 35
5.6.0 Introduction on authentication and access control . 35
5.6.1 [ACM-FH] Access control for functions whose use can cause harm . 35
5.6.2 [PARCONT] Support of parental control. 36
5.6.3 [AUM-FH] Authentication for functions whose use can cause harm . 36
5.6.4 [AUTHZ-LP] Least privilege in authorisation policies . 37
5.6.5 [AUTHZ-R] Revocability of granted permissions . 37
5.6.6 [AUTHZ-PC] Authorisation policies for parental control. 37
5.7 Confidentiality protection . 37
5.7.0 Introduction on confidentiality protection . 37
5.7.1 [CONF-SSM] Confidentiality protecting persistent storage for confidential data . 38
5.7.2 [CONF-COM] Communication of confidential data . 38
5.8 Integrity protection . 39
5.8.0 Introduction on integrity protection . 39
5.8.1 [INT-SSM] Integrity protecting persistent storage for integrity relevant data . 39
5.8.2 [INT-COM] Communication of integrity relevant data . 39
5.8.3 [INT-SWPCK] Software package verification . 40
5.9 Data minimisation . 40
5.9.0 Introduction on data minimisation . 40
5.9.1 [DMIN-DJST] Minimise processed data. 40
5.10 Availability protection . 41
5.10.0 Introduction on availability protection . 41
5.10.1 [AVAI-TIME-RECO-POW] Restoration after loss of power . 41
5.10.2 [AVAI-TIME-NETW] Local operation . 41
5.10.3 [AVAI-TIME-RECO-NETW] Restoration after loss of network connection . 41
5.10.4 [AVAI-TIME-OUTA-NOT] Notify non-availability . 41
5.10.5 [AVAI-TIME-PREV-NOT] Notify upcoming limitation . 41
5.10.6 [AVAI-TIME-NET-PRIO] Network prioritisation . 42
5.10.7 [AVAI-TIME-RES-PRIO] Power resource prioritisation . 42
5.10.8 [AVAI-TIME-DOS-RATE] Incoming rate limiting . 42
5.10.9 [AVAI-SUM-SCHEDULE] Scheduling of updates . 42
5.11 Non-interference . 42
5.11.0 Introduction on non-interference . 42
5.11.1 [NOINF-AMP] Amplification control . 42
5.12 Attack surface minimisation . 43
5.12.0 Introduction on attack surface minimisation . 43
5.12.1 [LAS-INVAL] Validation of external data input . 43
5.12.2 [LAS-INSAN] Sanitisation of external data input . 43
5.12.3 [LAS-PHY-INF] Only necessary physical interfaces . 43
5.12.4 [LAS-LOGIC-INF] Only necessary logical interfaces active by default . 43
5.12.5 [LAS-APP] Only necessary apps by default . 43
5.12.6 [LAS-SBOOT] Secure boot . 43
5.13 Exploit mitigation . 44
5.13.0 Introduction on exploit mitigation . 44
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5.13.1 [PRIV-DATA-HIGH] Privileged access on impact class high data assets . 44
5.13.2 [PRIV-FUNC-HIGH] Privileged access on impact class high function assets . 44
5.14 Monitoring . 44
5.14.0 Introduction on monitoring . 44
5.14.1 [MON-LOW] Events to log for low risk internet connected toy . 44
5.14.2 [MON-MEDIUM] Events to log for medium risk internet connected toy . 45
5.14.3 [MON-HIGH] Events to log for high risk internet connected toy . 45
5.14.4 [MON-HANDLE] Handling of events . 45
5.14.5 [LOG-TIME] Timestamps for logs . 45
5.14.6 [LOG-TIME-HIGH] Real-time timestamps for logs . 46
5.14.7 [LOG-STORE-MEDIUM] Logfile persistence for medium risk internet connected toy . 46
5.14.8 [LOG-STORE-HIGH] Logfile persistence for high risk internet connected toy . 46
5.14.9 [LOG-CONFIG] Configuration of logging mechanisms . 46
5.15 Factory reset and data portability . 46
5.15.0 Introduction on factory reset and data portability . 46
5.15.1 [DLM-PERM] Permanent removal of user-related data . 47
6 Assessment criteria for compliance with technical requirements . 47
6.1 General . 47
6.2 Appropriate level of cybersecurity . 49
6.2.1 Assessment criteria for [USERNOT-NOSECFUC] . 49
6.2.2 Assessment criteria for [USERNOT-SECREL] . 49
6.2.3 Assessment criteria for [GUI-SECCONF] . 50
6.2.4 Assessment criteria for [BACKUP-TRANS] . 51
6.2.5 Assessment criteria for [BACKUP-AUTOTRANS] . 53
6.2.6 Assessment criteria for [BACKUP-EXPORT]. 54
6.3 No known exploitable vulnerabilities . 55
6.3.1 Assessment criteria for [NKEV-MKAV] . 55
6.3.2 Assessment criteria for [NKEV-INIT-UDP] . 56
6.4 Secure by default configuration . 58
6.4.1 Assessment criteria for [SDC-AUM-FH] . 58
6.4.2 Assessment criteria for [SDC-SUM-AUTO] . 59
6.4.3 Assessment criteria for [SDC-SUM-NOTIF] . 60
6.4.4 Assessment criteria for [SDC-FRM] . 61
6.4.5 Assessment criteria for [SDC-PARCONT] . 62
6.4.6 Assessment criteria for [SDC-MON-HANDLE] . 63
6.4.7 Assessment criteria for [CRY-GENERAL] . 64
6.4.8 Assessment criteria for [CRY-CCK-PRE-LEN] . 65
6.4.9 Assessment criteria for [CRY-CCK-GEN] . 65
6.4.10 Assessment criteria for [CRY-PW-PRE-COM] . 66
6.4.11 Assessment criteria for [CRY-PW-GEN-COM] . 67
6.4.12 Assessment criteria for [CRY-PW-USR-COM]. 68
6.5 Security updates . 70
6.5.1 Assessment criteria for [SU-SUPPORT]. 70
6.5.2 Assessment criteria for [SU-PROVIDE] . 71
6.5.3 Assessment criteria for [SU-AUTO] . 72
6.5.4 Assessment criteria for [SU-DISABLE-AUTO] . 73
6.5.5 Assessment criteria for [SU-POSTPONE-AUTO]. 74
6.5.6 Assessment criteria for [SU-NOTIF] . 75
6.6 Authentication and access control . 76
6.6.1 Assessment criteria for [ACM-FH] . 76
6.6.2 Assessment criteria for [PARCONT] . 78
6.6.3 Assessment criteria for [AUM-FH] . 79
6.6.4 Assessment criteria for [AUTHZ-LP] . 80
6.6.5 Assessment criteria for [AUTHZ-R] . 81
6.6.6 Assessment criteria for [AUTHZ-PC] . 82
6.7 Confidentiality protection . 82
6.7.1 Assessment criteria for [CONF-SSM] . 82
6.7.2 Assessment criteria for [CONF-COM] . 84
6.8 Integrity protection . 85
6.8.1 Assessment criteria for [INT-SSM] . 85
6.8.2 Assessment criteria for [INT-COM] . 87
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6.8.3 Assessment criteria for [INT-SWPCK] . 88
6.9 Data minimisation . 89
6.9.1 Assessment criteria for [DMIN-DJST] . 89
6.10 Availability protection . 90
6.10.1 Assessment criteria for [AVAI-TIME-RECO-POW] . 90
6.10.2 Assessment criteria for [AVAI-TIME-NETW] . 92
6.10.3 Assessment criteria for [AVAI-TIME-RECO-NETW] . 93
6.10.4 Assessment criteria for [AVAI-TIME-OUTA-NOT] . 95
6.10.5 Assessment criteria for [AVAI-TIME-PREV-NOT] . 96
6.10.6 Assessment criteria for [AVAI-TIME-NET-PRIO] . 98
6.10.7 Assessment criteria for [AVAI-TIME-RES-PRIO] . 99
6.10.8 Assessment criteria for [AVAI-TIME-DOS-RATE] . 100
6.10.9 Assessment criteria for [AVAI-SUM-SCHEDULE] . 101
6.11 Non-interference . 102
6.11.1 Assessment criteria for [NOINF-AMP] . 102
6.12 Attack surface minimisation . 103
6.12.1 Assessment criteria for [LAS-INVAL] . 103
6.12.2 Assessment criteria for [LAS-INSAN] . 105
6.12.3 Assessment criteria for [LAS-PHY-INF] . 106
6.12.4 Assessment criteria for [LAS-LOGIC-INF] . 106
6.12.5 Assessment criteria for [LAS-APP] . 107
6.12.6 Assessment criteria for [LAS-SBOOT]. 108
6.13 Exploit mitigation . 109
6.13.1 Assessment criteria for [PRIV-DATA-HIGH] . 109
6.13.2 Assessment criteria for [PRIV-FUNC-HIGH] . 111
6.14 Monitoring . 112
6.14.1 Assessment criteria for [MON-LOW] . 112
6.14.2 Assessment criteria for [MON-MEDIUM] . 113
6.14.3 Assessment criteria for [MON-HIGH] . 113
6.14.4 Assessment criteria for [MON-HANDLE] . 114
6.14.5 Assessment criteria for [LOG-TIME] . 116
6.14.6 Assessment criteria for [LOG-TIME-HIGH] . 117
6.14.7 Assessment criteria for [LOG-STORE-MEDIUM] . 118
6.14.8 Assessment criteria for [LOG-STORE-HIGH] . 119
6.14.9 Assessment criteria for [LOG-CONFIG] . 120
6.15 Factory reset and data portability . 121
6.15.1 Assessment criteria for [DLM-PERM] . 121
Annex A (informative): Relationship between the present document and the essential
cybersecurity requirements of EU Regulation (EU) 2024/2847 . 124
Annex B (informative): Security analysis. 128
B.1 General . 128
B.2 Assets . 128
B.3 Risk factors . 128
B.4 Assumptions . 128
B.5 Threats . 129
B.6 Relationship between the present document and the covered/not covered cybersecurity risks . 129
B.7 Guidance for determining impact classes . 132
B.7.1 General . 132
B.7.2 Confidential data . 132
B.7.3 Loss sensitive data . 133
B.7.4 Time sensitive function . 133
B.7.5 Integrity relevant data and integrity relevant function . 134
Annex C: Void . 135
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Annex D (normative): Relationship between specific data and functions assets covered by
the present document to impact classes for generic asset categories . 136
D.1 Data assets . 136
D.2 Function assets . 137
Annex E (normative): Protection measures . 139
E.1 Authentication mechanism strength . 139
E.1.1 [AUM-FH] Authentication for functions whose use can cause harm . 139
E.1.1.1 General . 139
E.1.1.2 [AUM-E-I-Basic] AUTH.Basic inherence based SFA . 139
E.1.1.3 [AUM-E-K-Basic] AUTH.Basic knowledge based SFA . 139
E.1.1.4 [AUM-E-I-Normal] AUTH.Normal inherence based SFA . 139
E.1.1.5 [AUM-E-K-Normal] AUTH.Normal knowledge based SFA . 139
E.1.1.6 [AUM-E-P-Normal] AUTH.Normal possession based SFA . 139
E.1.1.7 [AUM-E-MFA-Normal] AUTH.Normal MFA . 140
E.1.1.8 [AUM-E-I-Enhanced] AUTH.Enhanced inherence based SFA . 140
E.1.1.9 [AUM-E-K-Enhanced] AUTH.Enhanced knowledge based SFA . 140
E.1.1.10 [AUM-E-P-Enhanced] AUTH.Enhanced possession based SFA . 140
E.1.1.11 [AUM-E-MFA-Enhanced] AUTH.Enhanced MFA . 140
E.1.1.12 [AUM-E-I-Strong] AUTH.Strong inherence based SFA . 141
E.1.1.13 [AUM-E-P-Strong] AUTH.Strong possession based SFA . 141
E.1.1.14 [AUM-E-MFA-Strong] AUTH.Strong MFA . 141
E.1.1.15 [AUM-E-Replay] AUTH.Normal, AUTH.Enhanced and AUTH.Strong replay protection . 141
E.1.1.16 [AUM-E-PitM] AUTH.Normal, AUTH.Enhanced and AUTH.Strong person in the middle
protection . 142
E.1.2 Assessment for [AUM-FH] authentication mechanism strength . 142
E.1.2.1 General . 142
E.1.2.2 Assessment criteria for [AUM-E-I-Basic] . 142
E.1.2.3 Assessment criteria for [AUM-E-K-Basic] . 143
E.1.2.4 Assessment criteria for [AUM-E-I-Normal] . 144
E.1.2.5 Assessment criteria for [AUM-E-K-Normal] . 145
E.1.2.6 Assessment criteria for [AUM-E-P-Normal] . 145
E.1.2.7 Assessment criteria for [AUM-E-MFA-Normal] . 147
E.1.2.8 Assessment criteria for [AUM-E-I-Enhanced] . 148
E.1.2.9 Assessment criteria for [AUM-E-K-Enhanced] . 149
E.1.2.10 Assessment criteria for [AUM-E-P-Enhanced] . 150
E.1.2.11 Assessment criteria for [AUM-E-MFA-Enhanced] . 152
E.1.2.12 Assessment criteria for [AUM-E-I-Strong] . 153
E.1.2.13 Assessment criteria for [AUM-E-P-Strong] . 154
E.1.2.14 Assessment criteria for [AUM-E-MFA-Strong]. 155
E.1.2.15 Assessment criteria for [AUM-E-Replay] . 156
E.1.2.16 Assessment criteria for [AUM-E-PitM] . 157
E.2 Integrity protection strength . 158
E.2.1 [INT-SSM] Integrity protecting persistent storage for integrity relevant data . 158
E.2.1.1 General .
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