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TCB – Trusted Computing Base

Webopedia Staff
Last Updated May 24, 2021 7:56 am

Short for trusted computing base. TCB refers to the totality of protection mechanisms (hardware, firmware and software) that provide a secure computing environment. The TCB includes everything that must be trusted — access control, authorization and authentication procedures, cryptography, firewalls, virus protection, data backup, and even human administration — in order for the right level of security to work.