: Some security software may not properly scan within highly compressed archives, and older versions of 7-Zip have had vulnerabilities reported that could lead to arbitrary code execution. It is highly recommended to use the latest version (v24.07 or later) to ensure safety. 7-Zip is free software with open source.

: Be cautious when downloading .7z files from unofficial sources. Malicious actors sometimes use lookalike sites or trojanized installers to spread malware.

: Unlike ZIP, 7z uses "solid" compression, where all files are treated as one continuous stream. This improves size but means if one part of the archive is corrupted, it may be difficult to recover any of the files.