Your best protection against the WannaCry ransomware virus is to update Windows until it says you are fully up-to-date - and keep updating!
If you Google for a tech support phone number please make sure you are *really* calling Microsoft or Apple or... https://t.co/SkD2bh01Tr
Beware of Crypto / Ransomware virus! I've seen it 8 times. It can even destroy your backup! I have recovered... https://t.co/HaKhtKwjPL