A hacker group calling itself #GOP is blackmailing Sony Pictures, we’re told. We’re also told the company’s entire network is on lockdown. But what’s with the childish skull defacement and tone-deaf hashtag? In IT Blogwatch, bloggers sound slightly suspicious about corporate […] For more information go to http://www.NationalCyberSecurity.com, http://www. GregoryDEvans.com, http://www.LocatePC.net…