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 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.
: Added support for unpacking ISO images, MSI installers, and RAR archives. Russo History.7z
Increased encryption strength by moving to a .
: The format was built to handle massive archives, supporting files up to 16,000,000,000 GB (16 exbibytes). Key Version Milestones 7-Zip was first released in by Russian developer Igor Pavlov
The official history of 7-Zip documents decades of refinements:
The extension introduced several major advancements to file archiving: Evolution of the 7z Format In early ,
: A long-standing stable version that became a standard for many users. Recent Updates (2018–Present) :