Use tools like VirusTotal or your computer's built-in antivirus to scan the file before you extract it. 1.3.1 , 1.3.3
You can send 20 documents as one single attachment rather than 20 separate ones. 1.2.1, 1.2.8 Download File Simple.zip
Never download or open a ZIP file from an unknown sender or a suspicious website. 1.3.6 , 1.3.8 Use tools like VirusTotal or your computer's built-in
Zipping files can free up space on your hard drive. 1.2.5, 1.2.7 How to Download and Open a ZIP File Download File Simple.zip
Be extremely cautious if you see files ending in .exe , .bat , or .js inside a ZIP folder. Running these can trigger a virus installation. 1.3.1, 1.3.5