Various news outlets report the release of
Wannakey [github.com], a decryption utility for files encrypted by the WannaCry [wikipedia.org] ransomware. According to the author of the software, it "has only been tested and known to work under Windows XP."
"Biggest Ransomware Attack in History" Hits Around 100 Countries, Disrupts UK's NHS [soylentnews.org]
WannaCrypt Ransomware Variant -- Lacking Kill Switch -- Seen in Wild [Updated] [soylentnews.org]