ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question
During a component selection review, you must choose between two mature open-source libraries that offer equivalent functionality. One is maintained solely by volunteers, while the other is backed by the original developers under a paid support contract. Which attribute of the commercially-supported option most directly lowers software supply-chain risk?
Distribution under a permissive license that simplifies legal compliance
An active issue tracker that anyone can use to report bugs
Public availability of source code for community peer review
A binding service-level agreement that commits the vendor to deliver security fixes within specified timelines
Commercial backing typically establishes a contractual service-level agreement obligating the vendor to deliver security patches, updates, and technical assistance within defined timeframes. This reduces uncertainty about vulnerability remediation speed and support continuity. Merely having open source code, a permissive license, or a public issue tracker does not guarantee timely fixes or accountability from maintainers.
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ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Supply Chain
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