I endorse the view that everyone should use an ad blocker, but for what it's worth I keep seeing this techcrunch article and the original advice offered by the FBI [1] is actually much more limited.

> Use an ad blocking extension when performing internet searches. Most internet browsers allow a user to add extensions, including extensions that block advertisements. These ad blockers can be turned on and off within a browser to permit advertisements on certain websites while blocking advertisements on others.

So the specific recommendation is that you turn on an ad blocker while performing searches. Why are they so concerned about searches? It's because of a specific form of fraud, where someone purchases an ad pretending to be the business you're searching for, but actually takes you "to a webpage that looks identical to the impersonated business’s official webpage" - that is, a phishing scam.

That's way more limited than the "FBI recommends ad blocker" statement would lead you to believe. From the FBI's point of view, pitching a bullshit supplement in an ad (what you're talking about) is an entirely legitimate business practice, and selling supplements is legal in the US so long as you don't make certain medical claims or imply FDA approval.

[1] https://web.archive.org/web/20221222162340/https://www.ic3.g...

I borrowed the phone of someone who is older to watch a facebook video in the app. In the middle of the video there was a video ad with sound playing, an amber alert for sound and a warning to click the link. The next ad after that one was also a warning that there was a virus and you needed to click the link

I think searches are just a common entry point to the internet at large. People search then they have some mistaken trust those links are legit.