If you have encountered this file, treat it with caution. Before opening it, consider the following safety steps:
You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip. Does 7z compress better than zip? - Microsoft Community Hub idisois.7z
The extension indicates a compressed archive created with 7-Zip, a free and open-source file archiver. If you have encountered this file, treat it with caution