Ransomware Attacks Are World-Wide Today. Don't Use Public Networks
There has been a huge upsurge in ransomware attacks on personal and business computers in the last few days and hours.
It's affecting computers in at least 74 countries and has caused hospitals and medical facilities to cancel medical procedures.
The initial infection seems to be coming from email attachments. Then, once one computer on a network has been infected, the virus spreads to other computers on the same network.
Don't Use Public Networks
There are lots of public networks that you can use when you're out and about with your laptop or mobile device. Don't use them. Until the crisis is over and you've got your computer patched just use your home network to access the internet.
And don't open email attachments
You'll find more information (if you like techy explanations) at Massive Global Ransomware Attach Underway
There is a patch available so make sure your computer has all the available Windows updates. If you're still using XP or older then please update your operating system. XP is no longer supported by Microsoft and the patch is not available.