For many, the "story" of switching to .7z is one of reclaiming storage space and enhancing security:

: For non-compressed data like text and source code, .7z can often shrink files 20–30% more than ZIP.

The story continues today as users look for modern interfaces. Unzipping 7z Files: A Simple Guide To Extracting To Folders

While there is no single "useful story" titled "Looking into gy.7z," the request likely refers to the narrative of and its native .7z format—a story of an open-source underdog that redefined file compression for power users. The Origins: A One-Man Revolution

: While early ZIP encryption was notoriously weak, 7-Zip implemented AES-256 bit encryption . This made it a favorite for "pentesters" and security-conscious users who needed a "real" cipher. Modern Evolution and Alternatives