Did you have a problem with your email on December 2nd?  Here might be the reason why, on Friday Microsoft Exchange servers started to experiencing some problems, Rackspace is looking in to cybersecurity that forced it to shut down its Hosted Exchange. After about 24 hours Rackspace declared that the issue was a security incident, they have not said if it was a ransomware attack or other type of cyberattack.  Rackspace is still trying to figure out what happen and encourage their customers to use Microsoft 365 for email service.  Rackspace thinks the Proxynotshell was one of the reason customers were having trouble with their emails. As of today, Rackspace confirmed that it was a ransomware attack on its Microsoft Exchange service, Rackspace is still unclear if any data was comprised.

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