Anonymous is open for anyone, if you want to be part of them you are free to do it. You can follow them on Twitter to see what is new in their operations or chat with them on IRC. You are free to join them but if you want to take a part on their operations then you should take your steps to hide your identity. Most Anonymous hackers are successfully encrypt their identities and they are taking steps to ensure that they don’t leave traces to lead to them. Suddenly, some people that agree with their philosophy and ideas don’t have the knowledge to ensure that they stay… Anonymous. Cops are also joining Anonymous to IRC chat rooms and they try to find the person behind the mask. For those who want to take part on Anonymous operations, at least be careful not to get caught, learn to hide your identity. If you don’t you will end up in jail, unless this is something you want.
Cops playing Anonymous