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21–30 of 43 articles
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Bleeping Computer
Huntress analysts discovered a previously unseen ransomware variant, Obscura, spreading from a victim company's domain controller. Learn how Obscura works—and what it means for defenders—in this week's Tradecraft Tuesday. [...]
The Hacker News
A previously undocumented threat actor dubbed Curly COMrades has been observed targeting entities in Georgia and Moldova as part of a cyber espionage campaign designed to facilitate long-term access to target networks. "They repeatedly tried to extract the NTDS database from domain controllers -- the primary repository for user password hashes and authentication data in a Windows network,"
Bleeping Computer
Microsoft warned IT admins that some Windows Server 2025 domain controllers might become inaccessible after a restart, causing apps and services to fail or remain unreachable. [...]
The Hacker News
The threat actors behind the RansomHub ransomware-as-a-service (RaaS) scheme have been observed leveraging now-patched security flaws in Microsoft Active Directory and the Netlogon protocol to escalate privileges and gain unauthorized access to a victim network's domain controller as part of their post-compromise strategy. "RansomHub has targeted over 600 organizations globally, spanning sectors
Bleeping Computer
Bleeping Computer
Microsoft has confirmed that last month's Windows Server security updates may also cause domain controller reboots after the Local Security Authority Subsystem Service (LSASS) process crashes. [...]
The Register
ALSO: Viasat hack wiper malware is back, users are the number one cause of data loss, and critical vulns If your Windows domain controllers have been crashing since a security update was installed earlier this month, there's no longer any need to speculate why: Microsoft has admitted it introduced a memory leak in its March patches and fixed the issue.… Infosec in brief
Bleeping Computer