MichaelWilemonTheMime: Recently I encountered a bad ad that managed to automatically redirect me from the article I was viewing to a blank page on a different domain, which looked like it was deploying an exploit kit. This is not Fandom's fault but rather rogue advertisements.
If people do get malware then the ads are most likely to blame. See this blog for more info such as how to safeguard yourself, if you are concerned. Out of my few years of using Fandom this has only happened a handful of times.