What can I do to prevent this in the future?
If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware.
Is this just me? Is this a weird ad or do I have malware on my network?I have no problem accessing archive.is , I never see a CAPTCHA, why you ask? - I use a DNS other than Cloudflare.
2023:'public-dns'It works with these, but also if I turn these off, open the site with a clean FF profile, or if I install an unconfigured uBlock Origin (which maybe is more easily detected).
Try Google or Quad9 DNS - archive.XXX and Cloudflare DNS don't play well together.
But it could also just be that the CAPTCHA is hard because the site cranked it up for non-US users, if you're not in the US like I am. There are many EU and Asian countries where I flat out cannot access perfectly benign websites (e.g., Home Depot†) if I'm shown on an IP from these countries.
So scan, but I doubt it will find anything.
† true, when I was in Georgia (the country) during the time that Home Depot had the huge skeleton yard decoration, I couldn't even access the Home Depot website to look as Home Depot was blocking it. The page would resolve and load, but Home Depot served up a 403 for every page. Using VPN with the US or western/northern EU countries worked, but eastern EU countries also got 403.
There was always something iffy with that site, but I guess it's completely failed now. (Why do people use archive.li?)