Joanne has gotten a WinZip popup that says she needs to scan and repair her computer. Leo says that is likely a phishing scam that wanted to get her to click on something and install it. She should be very careful with links that she didn't request. She shouldn't accept offers from strangers, as it's likely malware.
Leo advises Joanne run her antivirus program. But even then, she won't know if she's gotten rid of everything. But looking at what she was asked for, Leo says she likely dodged a bullet -- this time. To be sure, Joanne can always do an online virus scan for a second opinion.