Mac mini: Clicked suspicious link, what next?

You did everything right — outside of clicking a link in the email message of course, an act that is in itself completely harmless on Macs.

No other action is required, or justified. You really didn't need to change passwords, although it's not a bad idea to do that once in a while anyway.

Effective defenses against malware and other threats - Apple Community might be worth reading.

1. No.

2. No. That's normally only an issue on Windows; if you want to be absolutely certain, open the Downloads folder and throw away everything you don't recognize.

3. No.

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In that case be sure to draw his attention to the following, incorporated by reference in its Appendix:

Viruses, Trojans, and Worms! Oh My! Virus Warning! What to do!

Scam, scam, everywhere a scam: Scam Pop-ups, Scam Viruses, Scam Receipts, Scam Purchase

These scams are commonplace and target the elderly in particular. Sadly many of them fall victim to them and become intimidated into handing over a lifetime of savings. There is generally no recourse.

Spread the word.

Chrysalis2 wrote:

Thanks John for the link to your article. That is very helpful.

I'm going to get my elderly Dad to read it too. Unfortunately before I read your response I did reinstall Norton and ran a clean. Too late now, but I’ve uninstalled it.

Good! Such things can only cause trouble. "Norton" in particular has been known to be difficult to eradicate.