Anonymous user edit the answer

Question

I have found answer of one post in which an answer was edited by anonymous user and the post was totally changed.

I think, there should not be edit access to anonymous user.

Answer 1

Anonymous editing is allowed all over the network; we don't get that much edits to need to disable them, considering that rejecting an anonymously suggested edit would have the same result as with other suggested edit: When X suggested edits are rejected, the user is not allowed to suggest further suggested edits. In the case of anonymous users, I am not sure if the IP is considered or what, but the effect is surely the anonymous user not being able to suggest more edits.

If all, I would block those edits that change too much of the original post; I am sure I made a feature request over at Meta Stack Overflow, the network-wide meta site.