There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data.
Дзеркало BBC Tor
With Tor Browser, you are free to access sites your home network may have blocked. Tor Browser prevents someone watching your connection from knowing what websites you visit. All anyone monitoring your browsing habits can see is that you’re using Tor. This website is using a security service to protect itself from online attacks. The action you just performed triggered the security solution.
