A debugger-based technique uses debugging behavior to inspect a live process, pause execution, and read data from memory while the program is running. In normal software development, debuggers help engineers trace code, inspect variables, and understand failures. In malware and offensive tooling, the same capability can be abused to watch for sensitive values such as passwords, session tokens, or encryption keys when they exist in plaintext in RAM.
This matters in cyber security because memory inspection can bypass protections that only cover files on disk. If a browser or application decrypts data for use, an attacker may try to attach as a debugger, wait for the secret to appear, and copy it before it disappears. Defenders look for debugger attachment, breakpoint activity, unusual process access, and suspicious reads of protected processes. Blocking unauthorized debugging and monitoring process-memory telemetry can help detect this kind of runtime theft.