Rackspace’s hosting for Exchange servers remained offline Tuesday after an outage Friday that the company now ascribes to a ransomware attack. Credit: Timofeev Vladimir / Shutterstock Cloud services and hosting provider Rackspace Technology acknowledged Tuesday that a recent incident that took most of its Hosted Exchange email server business offline was the product of a ransomware attack. The company shut the service down last Friday. It was not initially clear what had caused the outage, but Rackspace quickly moved to shift Exchange customers over to Microsoft 365, as this part of the company’s infrastructure was apparently unaffected. Rackspace offers migration to Microsoft 365 Rackspace said today that there is “no timeline” for restoration of Exchange service, but it is offering Exchange users technical assistance and free access to Microsoft 365 as a substitute, though it acknowledged that migration is unlikely to be a simple process for every user. Rackspace said that, while the migration is in progress, customers can forward emails sent to their Hosted Exchange inboxes to an external server, as a temporary workaround. The company said that the incident was isolated to its Hosted Exchange business and that the rest of its lineup of products and services are fully functional. It’s unclear how Rackspace was able to limit the access of the ransomware attackers to one corner of its operations, and the company did not respond to a request for comment on this point. The investigation is “still in its early stages,” according to Rackspace’s official updates on the matter. The company added that it is, as yet, unable to ascertain whether any consumer data was affected by the attack, but pledged to notify customers if that proves to be the case. Some email archives remain accessible, according to the updates, and Rackspace said that it is working to provide those to customers “where available,” as a precursor to migrating over to Microsoft 365. Rackspace has also hired “a leading cyber defense firm” to assist in the investigation, though it declined to name the company publicly. “Out of an abundance of caution, we have put additional security measures in place and will continue to actively monitor for any suspicious activity,” Rackspace said in its latest advisory. In a public statement, the company said that, despite the ongoing nature of its investigation, it can say that the cyberattack has affected its bottom line. The Hosted Exchange business generates roughly $30 million a year, and a prolonged outage, with its associated costs, is likely to dent that figure. Related content news Cisco patches actively exploited zero-day flaw in Nexus switches The moderate-severity vulnerability has been observed being exploited in the wild by Chinese APT Velvet Ant. By Lucian Constantin Jul 02, 2024 1 min Network Switches Network Security news Nokia to buy optical networker Infinera for $2.3 billion Customers struggling with managing systems able to handle the scale and power needs of soaring generative AI and cloud operations is fueling the deal. By Evan Schuman Jul 02, 2024 4 mins Mergers and Acquisitions Networking news French antitrust charges threaten Nvidia amid AI chip market surge Enforcement of charges could significantly impact global AI markets and customers, prompting operational changes. By Prasanth Aby Thomas Jul 02, 2024 3 mins Technology Industry GPUs Cloud Computing news Lenovo adds new AI solutions, expands Neptune cooling range to enable heat reuse Lenovo’s updated liquid cooling addresses the heat generated by data centers running AI workloads, while new services help enterprises get started with AI. By Lynn Greiner Jul 02, 2024 4 mins Cooling Systems Generative AI Data Center PODCASTS VIDEOS RESOURCES EVENTS NEWSLETTERS Newsletter Promo Module Test Description for newsletter promo module. Please enter a valid email address Subscribe