User blog comment:The Ultimate Thinker/How to catch a Sock Puppet?/@comment-4957813-20140826041539

Special:Log/newusers shows all the accounts that have just been created on the wiki. Sometimes socks are created on the wiki right after they were banned, this could be a good way to catch them.

On another note, do not assume that the user who became active in editing or in chat or has created their account recently is a sock.