Prison Locker: A load of überhyped malware FUD over... internet chatter
And to keep things in perspective, another security industry view of the same 'threat':
"An underground advert seeking help in developing a file-encrypting ransomware kit that might be sold for just $100 a go sparked something of a panic on the interwebs this week.
But security watchers are yet to see any samples of the so-called Prison Locker ransomware, leading at least two security firms to characterise the threat as intangible and overhyped.
Security researchers at MalwareMustDie posted a blog entry last Friday featuring screenshots from underground forums where a malign coder sought help to develop a file-encrypting ransomware creation kit."