A vaccine has been discovered for the cyber-attack that hit organisations across the globe Tuesday.
By creating three read only files named perfc (no extension), perfc.dll and perfc.dat and adding them to the “C:\Windows” folder. More info here…
http://www.bbc.co.uk/news/technology-40427907
https://www.bleepingcomputer.com/news/security/vaccine-not-killswitch-found-for-petya-notpetya-ransomware-outbreak/