A new strain of the Petya ransomware started propagating on June 27, 2017, infecting many organizations. Similar to WannaCry, Petya Ransomware uses the Eternal Blue exploit to propagate itself. Petya is taking down corporate networks that run mainly on Microsoft Windows software. It has already hit most Government applications in Ukraine as well as major companies in Europe including advertising agency WPP and law firm DLA Piper.