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Cybersecurity researchers have identified a new threat cluster known as OP-512, which has been targeting Microsoft Internet Information Services (IIS) servers using a customized web shell framework. The activity is believed to be linked to Chinese espionage efforts, according to a report by ReliaQuest. The organization noted that OP-512 appears to be conducting espionage operati...

Microsoft has announced important updates regarding Windows authentication, focusing on modernizing its security protocols by reducing reliance on the outdated NTLM (NT LAN Manager). For years, Microsoft has been transitioning away from NTLM, promoting Kerberos-based alternatives as a more secure option. With the forthcoming versions of both client and server editions of Windows...

Attackers are currently exploiting a critical vulnerability in the Netlogon code of Windows Server, enabling unauthorized access to networks. According to the Belgian Cybersecurity Authority (CCB), a specially crafted packet sent to the domain controller suffices for an attack. System administrators are urged to verify that the patches released by Microsoft in May are installed ...

In this guide, we will detail the process of monitoring Windows hosts using Zabbix, covering everything from installing the Zabbix agent to connecting Windows nodes with the Zabbix server, as well as collecting metrics and setting up alerts. Installing Zabbix Agent on a Windows Machine To monitor a Windows Server 2022 host, you need to […]

Fixing Duplicate Security Identifier (SID) Issues in Windows In a recent update by Microsoft, strict uniqueness requirements for local machine Security Identifiers (SIDs) were enforced for Windows 11 25H2, 24H2, and Windows Server 2025. The updates mandate that each computer in a network must possess a unique SID to ensure proper network authentication. If computers […]