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ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question

While modeling threats for a customer self-service portal, you document a misuse case: an attacker uploads a file disguised as a PNG that actually carries JavaScript, which executes when other users view it. What security requirement most effectively counters this scenario?

  • The portal must record the source IP address of every file upload for post-incident investigation.

  • The application must verify that the file's MIME type and content match an approved list of image formats before accepting the upload.

  • The system must encrypt all uploaded files at rest using AES-256 encryption.

  • The server must reject any image larger than 5 MB to conserve storage and bandwidth.

ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Requirements
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