Security audits
Tangem publishes independent audit summaries to make external validation visible. These reviews cover core product surfaces and reinforce Tangem's transparency model.
Mobile Wallet (iOS / Android)
March 2026 No critical vulnerabilities foundSecure cryptographic implementationProper key management practicesProduction-ready security architecture
Cure53's review supports the view that Tangem's mobile wallet applies strong security practices around key handling, cryptographic operations, and sensitive data flows. The audited mobile stack was presented as suitable for production use. 
Mobile Hardware Wallet & Firmware
December 2023 No critical vulnerabilities foundSecure cryptographic implementationProper key management practicesProduction-ready security architecture
Riscure's assessment supports Tangem's hardware-centric security claims by validating secure element usage, firmware integrity measures, and overall wallet architecture. The implementation was assessed as robust and appropriate for high-trust key protection workflows. 
Smartcard Code
2023 No critical vulnerabilities foundSecure cryptographic implementationProper key management practicesProduction-ready security architecture
Kudelski Security's review of Tangem's smartcard code supports the claim that security-critical logic is isolated appropriately and aligned with best practices for cryptographic devices. The architecture was presented as mature and security-conscious.