ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question
While preparing an open-source release, a developer minifies and renames variables in client-side JavaScript to conceal proprietary business rules from competitors. In secure coding terms, what security characteristic does this obfuscation actually provide the organization?
It hinders casual reverse engineering by making the code difficult for humans to understand, without providing strong cryptographic secrecy.
It automatically scans and patches vulnerable third-party libraries during the build process.
It guarantees confidentiality of the algorithm because the code becomes unreadable without a decryption key.
It enforces mandatory access control at runtime to stop any unauthorized code execution.
Obfuscation deliberately alters the appearance of source or byte code-through renaming symbols, restructuring control flow, or compressing and removing whitespace-so humans have a harder time understanding the underlying logic. This can deter casual reverse engineering and slow an attacker, but it does not provide cryptographic secrecy, runtime access control, or automatic vulnerability mitigation. Encryption or signing would be required for confidentiality or integrity guarantees, and separate hardening measures are needed to block debuggers or patch dependencies. Therefore, the best description of the benefit is that obfuscation simply makes code harder for people to read, offering only a deterrent rather than strong protection.
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Why does obfuscation not provide strong cryptographic secrecy?
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ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Implementation
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