Since discovering the attack on December 2 and confirming the resulting outage was caused by a ransomware attack, Rackspace has been offering affected customers free licenses to migrate their email from its Hosted Exchange platform to Microsoft 365. The cloud computing provider also provided affected customers with download links to recovered historic mailbox data (containing email messages before December 2) through its customer portal via an automated queue. Rackspace added that its Hosted Exchange environment would be discontinued, saying that it was already planning to migrate customers to Microsoft 365 even before the December ransomware attack. “Finally, the Hosted Exchange email environment will not be rebuilt as a go-forward service offering,” Rackspace said. “Even prior to the recent security incident, the Hosted Exchange email environment had already been planned for migration to Microsoft 365, which has a more flexible pricing model, as well as more modern features and functionality.”
https://www.bleepingcomputer.com/news/security/rackspace-customer-email-data-accessed-in-ransomware-attack/
