Security News
Unpatched MS Office flaw may leak NTLM hashes to attackersA new MS Office zero-day vulnerability can be exploited by attackers to grab users' NTLM hashes, Microsoft has shared late last week. Key metrics for monitoring and improving ZTNA implementationsIn this Help Net Security interview, Dean Hamilton, CTO at Wilson Perumal & Company, discusses the complexities of zero trust network access implementation, focusing on balancing security with operational efficiency.
A new MS Office zero-day vulnerability can be exploited by attackers to grab users' NTLM hashes, Microsoft has shared late last week. Once attackers get a victim's NTLM hash, they can relay it another service and authenticate as the victim.
Microsoft has disclosed a high-severity vulnerability affecting Office 2016 that could expose NTLM hashes to a remote attacker. [...]
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Microsoft has officially deprecated NTLM authentication on Windows and Windows servers, stating that developers should transition to Kerberos or Negotiation authentication to prevent problems in the future. New Technology LAN Manager, better known as NTLM, is an authentication protocol first released in 1993 as part of Windows NT 3.1 and as the successor to the LAN Manager protocol.
Microsoft on Monday confirmed its plans to deprecate NT LAN Manager (NTLM) in Windows 11 in the second half of the year, as it announced a slew of new security measures to harden the widely-used...
Microsoft has fixed a known issue causing NTLM authentication failures and domain controller reboots after installing last month's Windows Server security updates. [...]
Microsoft has confirmed customer reports of NTLM authentication failures and high load after installing last month's Windows Server security updates. According to a new entry added to the Windows health dashboard on Tuesday, this known issue will only affect Windows domain controllers in organizations with a lot of NTLM traffic and few primary DCs. The list of impacted Windows versions and buggy security updates includes Windows Server 2022, Windows Server 2019, Windows Server 2016, Windows Server 2012 R2, Windows Server 2012, Windows Server 2008 R2, and Windows Server 2008.
What organizations need to know about the Digital Operational Resilience ActIn this Help Net Security interview, Kris Lovejoy, Global Security and Resilience Leader at Kyndryl, discusses the impact of the Digital Operational Resilience Act on organizations across the EU, particularly in ICT risk management and cybersecurity. Cisco patches Secure Client VPN flaw that could reveal authentication tokensCisco has fixed two high-severity vulnerabilities affecting its Cisco Secure Client enterprise VPN and endpoint security solution, one of which could be exploited by unauthenticated, remote attackers to grab users' valid SAML authentication token.
A threat actor specializing in establishing initial access to target organizations' computer systems and networks is using booby-trapped email attachments to steal employees' NTLM hashes. "User authentication in Windows is used to prove to a remote system that a user is who they say they are. NTLM does this by proving knowledge of a password during a challenge and response exchange without revealing the password to anyone," Microsoft said in a recent post that announced their goal to deprecate NTLM use in favor of Kerberos - a more modern, extensible and secure authentication protocol.