Microsoft: Exchange 2016 and 2019 reach end of support in six months

The China-linked threat actor known as UNC5174 has been attributed to a new campaign that leverages a variant of a known malware dubbed SNOWLIGHT and a new open-source tool called VShell to infect Linux systems."Threat actors are increasingly using open source tools in their arsenals for cost-effectiveness and obfuscation to save money and, in this case, plausibly blend in with the pool of