Source-code security review — methodology

When it applies

You have (some of) the source. Whitebox review finds classes that blackbox misses — it follows data from where it enters to where it's dangerous, across the whole codebase at once.

Why it works

Vulnerabilities are source → sink flows with missing sanitization in between. Reading code lets you see the sink (dangerous function), trace back to a user-controlled source, and confirm nothing safe happens on the path — far faster and more complete than guessing from outside.