The United States’ National Security Agency (NSA) today finally released GHIDRA version 9.0 for free, the agency’s home-grown classified software reverse engineering tool that agency experts have been using internally for over a decade to hunt down security bugs in software and applications.

GHIDRA is a Java-based reverse engineering framework that features a graphical user interface (GUI) and has been designed to run on a variety of platforms including Windows, macOS, and Linux.