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GB/T 42447-2023 (GBT42447-2023)

GB/T 42447-2023_English: PDF (GBT 42447-2023, GBT42447-2023)
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BASIC DATA
Standard ID GB/T 42447-2023 (GB/T42447-2023)
Description (Translated English) Information security technology -- Data security guidelines for telecom field
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard L80
Classification of International Standard 35.030
Word Count Estimation 11,127
Date of Issue 2023-03-17
Date of Implementation 2023-10-01
Drafting Organization China Mobile Communications Group Co., Ltd., China Institute of Electronic Technology Standardization, China Academy of Information and Communications Technology, China United Network Communications Group Co., Ltd., China Telecom Group Co., Ltd., Digital Currency Research Institute of the People's Bank of China, Chengdu Thinking Century Technology Co., Ltd., Institute of Information Engineering, Chinese Academy of Sciences, Beijing Youxuan Software Co., Ltd., National Industrial Information Security Development Research Center, Beijing Dongfang Communication Technology Co., Ltd., Beijing Yahong Century Technology Development Co., Ltd., Valley Network Security Technology Co., Ltd., Chongqing University of Posts and Telecommunications, Beijing Mingchao Wanda Technology Co., Ltd., Flash Information Technology Co., Ltd., Shanghai Guanan Information Technology Co., Ltd., Beijing University of Posts and Telecommunications, Huidun Information Security Technology (Suzhou) Co., Ltd.
Administrative Organization National Information Security Standardization Technical Committee (SAC/TC 260)
Issuing agency(ies) National Information Security Standardization Technical Committee (SAC/TC 260)

Standards related to: GB/T 42447-2023

GB/T 42447-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 35.030
CCS L 80
Information security technology -
Data security guidelines for telecom field
ISSUED ON: MARCH 17, 2023
IMPLEMENTED ON: OCTOBER 01, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 4
4 Abbreviations ... 5
5 General ... 5
6 Security principles ... 6
7 General security measures for telecom data ... 6
8 Security measures for telecom data processing ... 11
Bibliography ... 15
Information security technology -
Data security guidelines for telecom field
1 Scope
This document provides security principles and general security measures for carrying
out data processing activities in the telecom field, as well as corresponding security
measures that should be taken during the implementation of data collection, storage,
use and processing, transmission, provision, disclosure, destruction, etc.
This document applies for guiding telecom data processors to carry out data security
protection work, and is also applies for guiding third-party organizations to carry out
telecom data security assessment work.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 41479-2022 Information security technology - Network data processing
security requirements
3 Terms and definitions
For the purpose of this document, the terms and definitions defined in GB/T 41479-
2022 and the following apply.
3.1
telecom data
Data generated and collected in the course of telecommunications filed business
operations.
NOTE 1: Such as user identity information, call data, location data, signaling data, base station
construction and operation and maintenance data, network optimization data, etc.
NOTE 2: Without causing confusion, “telecommunications field data” in this document is
referred to as “telecom data”.
3.2
NOTE 1: The identification rules for important data and core data refer to relevant national and
industry standards, and other data are general data. Since general data covers a wide range of
data, telecom data processors can refine and grade general data according to production and
operation needs.
NOTE 2: For links where general measures and enhancement measures are not distinguished,
general data, important data, and core data shall be protected with reference to the same
measures.
6 Security principles
Telecom data processors shall adhere to the following principles:
a) Principle of three synchronization of security: during the design, construction, and
operation of relevant platforms carrying data, achieve synchronous planning,
construction, and operation of data security protection measures;
b) Principle of classification and grading protection: classify and grade data, and
take appropriate security measures commensurate with data security risks
according to differential characteristics such as category attributes, importance,
and sensitivity to ensure data security;
c) Principle of minimum necessary: during the collection, storage, use, processing,
transmission, provision, disclosure, destruction and other processing activities of
data, the type and size of data used are limited to those necessary for business
development and have legal, legitimate, and necessary purposes;
d) Principle of full life cycle management and control: data security protection
measures cover the entire life cycle of data from generation to destruction;
e) Principle of continuous evaluation and optimization: conduct normalized and
comprehensive security evaluation of security measures, and continuously and
dynamically optimize data security protection measures based on the evaluation
results.
7 General security measures for telecom data
7.1 Organizational guarantee
Telecom data processors should take the following security measures in terms of
organizational guarantee.
a) General measures:
1) Clarify the responsible departments for data security management, equip data
security managers, formulate data security system specifications and operating
procedures, and equip data security technical capabilities;
2) Establish a supervision, inspection, and assessment management system for
data security protection, and carry out data security supervision, inspection,
and assessment management.
b) Enhancement measures:
1) Establish a data security working system, clarify the data security management
organization, set up full-time positions for data security management, and
establish a collaboration mechanism between the data security management
organization and relevant departments;
2) Clarify key roles such as the person with the primary responsibility for data
security management within the organization;
3) Sort out the job positions involving important data and core data processing,
clarify job responsibilities, and sign a data security responsibility letter or
confidentiality agreement.
7.2 Data classification and grading
Telecom data processors should take the following security measures in terms of data
classification and grading.
a) General measures:
1) Regularly sort out data assets, form and update a list of data assets in a timely
manner, and carry out data classification and grading in accordance with
relevant regulations;
2) Classify organizational data categories based on factors such as business needs,
data sources, and uses, and update the data asset list in a timely manner based
on changes in data assets and changes in classification and grading
requirements.
b) Enhancement measures: Form and update a catalog of important data and core
data, and carry out catalog filing work in accordance with relevant regulations.
7.3 Permission management
Telecom data processors should take the following security measures in terms of
authority management.
a) General measures:
1) Clarify the data security audit coordinating department, assign security
auditors, and conduct security audits on authority allocation approval, data
processing logs, etc.;
2) Determine necessary data security audit strategies, clarify audit objects, audit
content and implementation cycles, and carry out security audits and data
analysis in key scenarios such as major data operations, unauthorized access
to data and remote access to data;
3) Promptly deal with, rectify, and track and review problems discovered in the
audit, and formulate regular data security audit summaries in accordance with
relevant regulations.
b) Enhancement measures:
1) Carry out data security audit technical capacity building (such as 4A), and
refine security audit strategies for common risks and prone events;
2) Regularly form a summary of security audits of important data and core data
in accordance with relevant regulations.
7.6 Risk monitoring and early warning
Telecom data processors should take the following security measures in terms of risk
monitoring and early warning: carry out data security risk monitoring; conduct
monitoring and inspections of data assets, data processing environments, network and
system equipment, data processing accounts, and internal and external data flows;
conduct investigation and early warning for abnormal flows and other behaviors; and
take remedial measures in a timely manner. Risks that may cause major or greater safety
incidents shall be reported in accordance with relevant regulations.
7.7 Emergency response
Telecom data processors should take the following security measures in terms of
emergency response.
a) General measures:
1) Develop an emergency plan for data security incidents, and clarify the division
of emergency response responsibilities, work processes, and disposal measures
according to the level of the incident;
2) Develop an emergency drill plan for data security incidents, conduct regular
drills for typical data security incidents such as data leakage, loss, theft,
damage, abuse, tampering, illegal access, and illegal transmission, and
formulate a drill summary report;
3) After a data security incident occurs, carry out emergency response in a timely
manner according to the emergency plan. After the incident is handled, carry
out rectification in accordance with relevant regulations, and form a summary
report and submit in a timely manner.
b) Enhancement measures: For security incidents involving important data and core
data, report in accordance with relevant regulations, while carry out tracking and
analyzing of the incident, and take relevant measures in a timely manner to reduce
the impact of the incident.
7.8 Security assessment
Telecom data processors should take the following security measures in terms of
security assessment.
a) General measures:
1) Regularly sort out and self-examine the organization’s overall data security
protection level, key business, and platform system data security;
2) Record the self-examination and summary process, form a summary report,
analyze the causes of the problems found, and clarify improvement measures
and plans.
b) Enhancement measures:
1) Carry out risk assessment of important data and core data, and take timely
and effective measures to eliminate potential security risks found in the
assessment based on important data processing scenarios;
2) Submit risk assessment reports to relevant departments in accordance with
relevant regulations.
7.9 Education and training
Telecom data processors should take the following security measures in terms of
education and training.
a) General measures:
1) Develop an education and training plan for personnel in data security positions,
and conduct regular education and training for personnel in data security-
related positions;
2) Clarify the annual training duration for data security positions, and conduct
assessments and evaluations for those who participate in the training.
8.3 Data use and processing
Telecom data processors should take the following security measures when conducting
data use and processing activities.
a) General measures:
1) Clarify the approval process and processing rules for data use and processing;
2) If data is used for automated decision-making, it shall carry out data processing
algorithm management to ensure the transparency of automated decision-
making and the fairness and rationality of the results.
b) Enhancement measures: Use technical measures such as access control and data
desensitization to ensure the security of important data processing.
8.4 Data transmission
Telecom data processors should take the following security measures when conducting
data transmission activities.
a) General measures:
1) According to business processes, network deployment, security risks, etc.,
divide network system security domains. According to the type, level and
application scenarios of data transmitted, clarify the data security policy and
take protective measures;
2) Develop work specifications for security management of data transmission
interfaces, and clarify interface security management and protection measures.
Sort out the interface situation, form an interface list and update it regularly,
and take corresponding measures for interfaces that are found to have security
issues or have gone offline through monitoring.
b) Enhancement measures:
1) For activities that transmit important data across networks and security
domains, conduct security approval in advance and adopt measures such as
verification technology, cryptography technology, secure transmission
channels (such as VPN) or secure transmission protocols (such as SSL) to
ensure the security of important data transmission;
2) Equip interface authentication capabilities; support the restriction of
unauthorized or illegal device access through MAC address, IP address or port
number binding, etc.; have interface security monitoring capabilities; support
the discovery of unauthorized or illegal device access, and provide alerts and
actions;
3) Have the ability to limit and block interface traffic, and support handling
measures for abnormal interface calling behaviors and abnormal important
data transmission events.
8.5 Data provision
Telecom data processors should take the following security measures when conducting
data provision activities.
a) General measures:
1) Clarify the scope, categories, conditions, procedures, etc. of data provision,
and regularly sort out the data provision list to ensure that the content of the
list is complete and accurate;
2) Clarify the data security protection terms in the service contract or agreement,
and clarify the data scope, usage rights, purpose, and security protection
responsibilities that the data receiver can access;
3) When data provision involves data export, it shall be conducted in accordance
with relevant national regulations and relevant standards.
b) Enhancement measures: Verify the data security protection capabilities of the data
receiver, assess security risks, and adopt security measures such as data
desensitization and data encryption.
8.6 Data disclosure
Telecom data processors should take the following security measures when conducting
data disclosure activities:
a) General measures: Clarify the scope, categories, conditions, procedures, etc. of
data disclosure, analyze and determine the possible impact on national security
and public interests before data disclosure, and do not disclose data if there is a
significant impact;
b) Enhancement measures: Establish an important data disclosure approval
mechanism, and use data desensitization technology to protect data required to be
disclosed by laws and regulations.
8.7 Data destruction
Telecom data processors should take the following security measures when conducting
data destruction activities.
a) General measures:
...