Rackspace Technology, a cloud service provider, suffered a ransomware attack in December 2022, which caused email outages for some of its clients. The company reported that a small number of its dedicated hosting customers were affected, but thousands of clients migrated to its cloud services. Rackspace stated that it was able to restore affected systems quickly and that no customer data was compromised. The company did not disclose whether a ransom was paid to the attackers.

According to an article in CPO Magazine article, the Rackspace ransomware attack highlights the need for organizations to have a comprehensive cybersecurity strategy and to regularly review and update their security measures.

Former Microsoft employee and security researcher Kevin Beaumont stated that the Rackspace ransomware attack leveraged the ProxyNotShell Microsoft Exchange vulnerabilities According to Beaumont, Rackspace’s Microsoft Exchange servers had build numbers predating the ProxyNotShell vulnerability. He estimated that thousands of small and medium businesses had been impacted by Rackspace email outages.

Source: https://www.cpomagazine.com/cyber-security/rackspace-ransomware-attack-caused-email-outages-thousands-of-customers-migrated-to-cloud-services/