: Upload the file to VirusTotal to have it analyzed by dozens of different antivirus engines simultaneously.

: Simply downloading a file is generally safe, but running an executable or opening a document with macros inside it can infect your system.

: Shady websites or unsolicited emails often distribute malware via ZIP archives to trick users into running dangerous code.

If you did not personally generate this file or request a diagnostic report from a technical support team, you should treat it as a . Security Risks of Unknown ZIP Files

: If you received this in an email from an unknown sender or a "no-reply" address, it is almost certainly a phishing attempt .