One way to test if your site has been the target of profile spammers is to use Google (or the search engine of your choice) to do a site specific search on your own site for the likely words, i.e. t e e n, v 1 agr a etc etc). I ended up changing the size of one of the profile fields to 1 character so they could poke in whatever they wanted but it got silently thrown away. It gave me a certain bizzarre pleasure in the idea of these folks putting up their lurid links, clicking save and the system silently just discarded it.
Security and privacy
Prevent profile spam on your Moodle site
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