Microsoft says outdated Exchange servers cannot receive new emergency mitigation definitions because an Office Configuration Service certificate type is being deprecated. Emergency mitigations (also ...

Microsoft has disclosed a high-severity Exchange Server vulnerability that allows attackers to forge legitimate senders on incoming emails and make malicious messages a lot more effective. The ...

Microsoft Exchange is a wildly popular threat target, with dangers exacerbated by the tech giant's end support for Exchange 2016 and 2019 last month. Now those email servers won't receive necessary, ...