Russo History.7z May 2026

Improved multi-threading for , significantly speeding up extraction on modern multi-core processors.

: Added support for unpacking ISO images, MSI installers, and RAR archives. Russo History.7z

The official history of 7-Zip documents decades of refinements: Recent Security Context In early , cybersecurity researchers

Expanded support for macOS formats, including archives using the LZFSE compression method. Recent Security Context The project was designed as a high-compression alternative

In early , cybersecurity researchers identified a zero-day vulnerability in the 7-Zip utility. This vulnerability was reportedly exploited during regional conflicts to bypass Windows security features like Mark of the Web (MotW) , which flags files downloaded from the internet to prevent malicious execution.

7-Zip was first released in by Russian developer Igor Pavlov . The project was designed as a high-compression alternative to established formats like ZIP and RAR. The core of its efficiency lies in the LZMA (Lempel-Ziv-Markov chain algorithm) and LZMA2 compression methods, which often achieve significantly smaller file sizes than standard ZIP files. Evolution of the 7z Format

: In many benchmarks, 7z can compress files 30–70% better than the standard ZIP format.