The 7z format uses high-ratio compression (LZMA/LZMA2), which often makes files significantly smaller than standard ZIP archives.
These files can be encrypted with strong AES-256 encryption , meaning you might need a password to open it if the creator set one. twitter012.7z
While the 7-Zip software itself is safe, you should exercise caution when opening compressed archives from unknown sources, as they can contain malware or viruses. How to Open It twitter012.7z