After years working in certification industry, GB44495 features a clear three-tier regulatory structure: enterprise management system as foundation, general baseline requirements as supporting criteria and concrete technical test specifications as landing implementation rules. Mastering this hierarchical framework is prerequisite before sorting specific test items for vehicle compliance.

1. Three-Tier Standard Architecture of GB44495

Tier 1: Information Security Assurance Management Requirement (originally CSMS pre-amendment)

Regulates OEM’s organizational full-lifecycle cybersecurity governance covering internal security workflow, whole-product risk mitigation, upstream supply chain risk control, routine safety verification and cyber incident emergency response. Post No.1 Amendment, standalone CSMS certification is eliminated with system compliance audit integrated into vehicle announcement testing while audit depth remains unchanged.

Tier 2: General Basic Security Baseline Requirement

Six core baseline dimensions define minimum compliance threshold: risk identification & disposal, dedicated onboard hardware protection, security testing & forensic traceability, cryptographic algorithm specification, factory default secure configuration and user personal data protection. Key mandatory rules include national standardized cryptographic algorithm adoption and forbidden factory-shipped disabled security protection settings.

Tier3: Core Technical Specification (four major defense layers & actual test scope)

The core testing clause contains 38 mandatory technical requirements expanded into 128 industry-standard test scenarios (statistical industry counting norm without explicit 128-item serial number in original GB44495 text), all categorized under four cybersecurity defense layers. Vehicle test scope is customized excluding irrelevant items based on onboard intelligent hardware configuration instead of full 128-item universal testing for every model.

  2. Detailed Test Content of Four Core Cybersecurity Defense Layers

Defense1: External Physical & Wireless Access Security

All exposed onboard interfaces including T-BOX cellular port, Bluetooth pairing channel, vehicle Wi-Fi hotspot, USB jack and OBD CAN diagnostic port undergo layered verification:

·Full port scanning detecting unnecessary open debug port and background idle service;

·Identity authentication validation preventing unauthorized arbitrary device access into vehicle internal network;

·Transmission channel encryption verification testing interception & decryption resistance of communication data;

·Malicious external device access simulation to verify gateway isolation & interception function.Common failure point: Dual-function vehicle USB port supporting both media reading and hidden debug command access gets direct non-compliance judgment requiring permission separation redesign.

Defense2: In-Vehicle & Cloud Communication Security

Mandatory three core protection indicators: data encryption transmission, anti-data tampering and anti-replay attack for both intra-car bus and vehicle-cloud communication. Minimum TLS1.2 cryptographic protocol is enforced for cloud connection with outdated lower-version TLS judged unqualified. Lab injects falsified data packet and repeats captured valid communication frame separately to verify system tamper-proof & replay-block capability. Critical mandatory clause: Vehicles cannot retain unpatched high-risk vulnerabilities publicly disclosed over six months on authoritative global vulnerability databases; recommended industry practice fixes critical loopholes within 7 calendar days as internal enterprise management specification.

Defense3: Remote OTA Software Upgrade Security (OTA-equipped vehicles only; omitted for non-OTA models)

Three core verification modules:

·Tampered upgrade package interception test confirming effective signature verification blocking modified malicious firmware installation;

·Abnormal upgrade interruption rollback validation ensuring system restores pre-update stable status after download suspension;

·Remote upgrade command access authorization inspection preventing arbitrary unauthorized background firmware push.Combined GB44495+GB44496 filing shares identical OTA test content to avoid duplicated inspection post amendment.

Defense4: Onboard User & Vehicle Data Security

Three-stage compliance inspection:

·Data classification grading separating personal sensitive info, driving trajectory data and vehicle operational statistics with differentiated protection policy per data sensitivity;

·Local onboard encrypted storage check for private biometric, location and user identity information;

·Cross-border outbound data desensitization audit plus end-user data deletion function verification forbidding invisible background residual data retention after customer-initiated erasure operation. This section links closely with upcoming mandatory national automotive data security standard (Plan No.20261957-Q-339), early full compliance reduces future rework cost for newly-enforced regulation.

  3. Explanation on 38 Clauses & 128 Test Items

One single technical requirement from the 38 core clauses splits into multiple practical test scenarios forming total 128 inspection cases. Actual executed test count is filtered by vehicle configuration via applicability confirmation by accredited lab: Basic fuel vehicle without cellular/Wi-Fi cuts off all remote communication test items; non-OTA models skip full upgrade security defense inspection. Applicability judgment result is finalized against submitted vehicle network architecture drawing, over-spec document declaration leads to unnecessary extra testing expense while under-declaration triggers missing test item failure.

Blueasia delivers pre-test gap screening and test-item applicability sorting for GB44495 certification. Contact Blueasia expert consultant:13534225140