Attacks and malware
What is Wiper?
Malware that destroys data or makes systems unbootable, with no way to recover, often disguised as ransomware.
A wiper is malware designed to destroy: it overwrites files, damages the boot records or corrupts disks so the systems cannot be recovered. Unlike ransomware, there is no key to buy.
Wipers are mostly associated with state-linked sabotage and are sometimes disguised as ransomware to confuse the response. Backups kept offline are the main defence.