Image: Envato If your team still runs Microsoft Exchange Server, treat this as a fire alarm. Four major cybersecurity agencies released guidance that exposes the reality behind Exchange attacks. The Australian Cyber Security Centre has warned that Exchange environments face continuous targeting and should be considered under imminent threat. Microsoft ended support for previous Exchange versions on October 14, which leaves countless organizations exposed to exploitation. On top of that, a critical Windows Server Update Service issue triggered emergency patches after active exploitation attempts struck multiple organizations, according to the US Cybersecurity and Infrastructure Security Agency. Statistics behind the attacks The numbers are ugly, and they are not abstract. Microsoft Exchange Server appears 16 times on CISA’s known exploited vulnerabilities catalog since 2021, with 12 of those vulnerabilities actively deployed in ransomware campaigns. Nation-state attackers and cybercriminals swarm these systems, which turns them into prime real estate for sophisticated attacks. Companies running unsupported Exchange versions now face unprecedented compromise risks. Microsoft Exchange Server Subscription Edition stands as the sole supported on-premises version after support for …