CAIRIS vs ThreatZ

CAIRIS is an open-source platform for specifying and checking systems with security and usability requirements in view. It brings together design information such as assets, countermeasures, factoids, personas, requirements, and architectural components. As a design develops, it can generate 12 views covering perspectives such as people, risks, requirements, architecture, and physical location, as well as threat models including Data Flow Diagrams. Its security analysis uses attack and architectural patterns to assess attack surface and check for known security problems and potential GDPR compliance issues. CAIRIS can produce Volere-compliant requirement specifications and GDPR DPIA documents. Its API supports design apps and connections to existing toolchains. It is free under the Apache Software License. Deployment options include Docker, Vagrant, or source installation on supported platforms; Ubuntu is the most tested. The web app supports modern browsers other than Internet Explorer, including Edge. A Chrome extension can turn highlighted webpage text into references linked to a CAIRIS server. The live demo is rebuilt nightly, and its data is visible to everyone.

ThreatZ is an automotive cybersecurity management platform for OEMs and Tier-1 suppliers tracking vehicle security and supply-chain evidence. It brings TARA, software bills of materials, attack paths, incidents and compliance evidence into a knowledge graph. Threat modeling supports STRIDE TARA, AI-assisted threat scenarios and attack paths with feasibility ratings. ThreatZ generates work products for ISO/SAE 21434, UN R155 and GB 44495-2024; the last requires PRC-region deployment. Its integration list includes more than 30 tools and formats, among them Vector CANoe, MATLAB System Composer, Jira, GitHub and SonarQube. Data interchange options include ReqIF, SARIF, OpenXSAM, STIX, AUTOSAR, PDF, CSV and Excel. Team and Professional are hosted AWS Marketplace subscriptions, while Enterprise supports private cloud, on-premises and air-gapped deployment. The listed Team plan costs $1,199 a year, billed annually, and allows up to three projects. Professional is listed at $499 a year, billed annually, for 5–50 users and up to 15 projects; Enterprise is $100 a year with custom billing and unlimited projects and users. A free four-week trial uses sample vehicle data; Professional and Enterprise trials require approval.