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The 10 Biggest Ransomware Attacks of 2019

Multinational manufacturers and U.S. city and county governments spent more $176 million responding to the biggest ransomware attacks of 2019, spending on everything from rebuilding networks and restoring backups to paying the hackers ransom.

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4. 22 Texas Towns

Recovery And Mitigation Costs: At least $12 million

A coordinated ransomware attack hit 22 Texas towns on Aug. 16, using Sodinokibi (REvil) ransomware to lock the municipalities out of their IT systems after hackers breached the software of a third-party service provider used to remotely manage their infrastructure. The criminals demanded a ransom of $2.5 million to regain access to the IT systems, but none of the affected towns were willing to pay.

All of the affected towns have transitioned from assessment to remediation and recovery by a week after the attack, with more than half resuming normal operations as of Sept. 9, according to the Texas Department of Information Resources (DIR). The state declined to release the names of the affected cities, with only Keene and Borger initially indicating they were victims of the attack.

Of the total cost associated with the ransomware, some $3.25 million was expected to be incurred by county governments, $2.34 million was expected to be incurred by cities and towns, and $1.8 million was expected to be incurred by educational institutions, according to Cybersecurity Insiders. The remaining $5 million of anticipated expenses were miscellaneous in nature.

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