NotPetya

Wiper dressed as ransomware that spilled from Ukraine into the costliest cyberattack in history.

Core Principles & Analysis

• It spread in June 2017 through a poisoned update of Ukrainian accounting software M.E.Doc.
• The "ransom" was a disguise: encrypted disks were unrecoverable by design.
• Damages near ten billion dollars hit Maersk, Merck, and others; Western governments attributed it to Russian military intelligence.