Because the code is open-source (GNU LGPL), it is frequently reviewed by the community for security vulnerabilities.
It uses the LZMA and LZMA2 algorithms, which provide a significantly better compression ratio than WinRAR's default settings. BECWSVH.7z
7-Zip supports AES-256 encryption, allowing you to password-protect archives and even encrypt filenames so contents remain hidden. Because the code is open-source (GNU LGPL), it
The 7z format typically offers 30–70% better compression than the standard ZIP format. BECWSVH.7z