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Bleeping Computer
Nearly 22,000 Microsoft Exchange servers exposed online remain unpatched against a high-severity authentication bypass vulnerability that allows attackers to hijack all user mailboxes. [...]
The Hacker News
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) and National Security Agency (NSA), along with international partners from Australia and Canada, have released guidance to harden on-premise Microsoft Exchange Server instances from potential exploitation. "By restricting administrative access, implementing multi-factor authentication, enforcing strict transport security
Bleeping Computer
The Cybersecurity and Infrastructure Security Agency (CISA) and the National Security Agency (NSA) have released guidance to help IT administrators harden Microsoft Exchange servers on their networks against attacks. [...]
The Hacker News
Unidentified threat actors have been observed targeting publicly exposed Microsoft Exchange servers to inject malicious code into the login pages that harvest their credentials. Positive Technologies, in a new analysis published last week, said it identified two different kinds of keylogger code written in JavaScript on the Outlook login page - Those that save collected data to a local file
The Register
One might say this is a wurst case scenario The German Federal Office for Information Security (BIS) has issued an urgent alert about the poor state of Microsoft Exchange Server patching in the country.…
Bleeping Computer
The German national cybersecurity authority warned on Tuesday that it found at least 17,000 Microsoft Exchange servers in Germany exposed online and vulnerable to one or more critical security vulnerabilities. [...]
Bleeping Computer
Tens of thousands of Microsoft Exchange email servers in Europe, the U.S., and Asia exposed on the public internet are vulnerable to remote code execution flaws. [...]
Bleeping Computer
A new PowerShell-based malware dubbed PowerExchange was used in attacks linked to APT34 Iranian state hackers to backdoor on-premise Microsoft Exchange servers. [...]
Bleeping Computer
Lockbit ransomware affiliates are encrypting victims via Microsoft Exchange servers hacked using exploits targeting unpatched vulnerabilities. [...]
Dark Reading
Cybercriminals took control of enterprise Exchange Servers to spread large amounts of spam aimed at signing people up for bogus subscriptions.