Memory Zeroing
Noun · Development
Definitions
The practice of overwriting memory contents with zeros before freeing or reusing it, preventing sensitive data (passwords, keys, plaintext) from lingering in deallocated memory where it could be read by other processes or via memory dumps. Requires volatile writes or special APIs to prevent compiler optimization from eliminating the zeroing.
In plain English: Erasing sensitive information from memory before giving it back to the system, so secrets like passwords don't linger where they could be found.
Example: "Use `explicit_bzero` for the key buffer — a regular memset might get optimized out since the compiler sees the memory isn't read afterward."