Cyber Risks · Krebs on Security

Don’t Wanna Pay Ransom Gangs? Test Your Backups.

Summary: Emsisoft CTO Fabian Wosar told Krebs on Security that the most common reason ransomware victims pay for decryption keys despite having backups is that they never tested how long a restore would take, sometimes discovering petabytes of data would need three months to download. Wosar cited two other frequent failures: decryption keys stored on the same file-sharing network the ransomware encrypted, and, more rarely, backups corrupted by the attackers themselves.

What's compelling: Coveware's Bill Siegel described victims with 50 petabytes of backups 30 miles away who, restoring over copper wire, calculated the job would take 69 years - and Wosar noted many companies do not even know their network dependencies or the order in which systems must be restored.

Read the original at Krebs on Security ↗

Topics
Data Breaches
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