: If you know the sender, contact them through a different channel (like a phone call) to confirm they actually sent you a file. Hackers often spoof email addresses to look legitimate.

: If you have already clicked the link or downloaded the file, immediately run a full system scan with a reputable antivirus like Bitdefender or ESET .

Did you or download any part of the file yet?

: Unknown file-sharing sites are frequently used to distribute malware, viruses, or ransomware. Some reports suggest that even visiting such sites can expose you to "drive-by" infections or browser vulnerabilities.