The crooks behind the CryptoLocker malware seem to have introduced a second chance option.
Victims, it seems, can now change their minds about not paying up.
Assume you were a victim of this devious malware, and decided, "No! I will not pay!"
Imagine that you've done a full cleanup; removed the malware from memory, hard disk and Windows registry; and gone to see what you can recover from your backup disks.
Now imagine that you are having malware cleaner's remorse.
Perhaps paying $300 would have been the pragmatic approach?