📜 WAYPOINT LESSON
Checkpoint: security
⭐⭐⭐ advanced⏳ 12 min read📍 Lesson 255 of 265
Synthesis: constant-time verification, safe storage decisions, injection prevention.
Checkpoint: security
The graded task pairs PBKDF2 password hashing with the timing-safe verification discipline, then proves salt uniqueness. Practice adds the normalize-then-verify path traversal defense and the parameterized-query boundary — the grammar rule made executable.