: Run a full system scan with Malwarebytes or Windows Defender .
Are you seeing any on your computer (pop-ups, slowness)?
: Arrived from a sender you don't know or a contact whose account was hacked.
I can provide specific steps to if it has been compromised.
: Hackers use .rar files to bypass some basic email scanners.
: Ensure Windows shows you the full name (e.g., invoice.pdf.exe instead of just invoice.pdf ). Do you have antivirus software currently installed?
