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Security

  • PowerShellSecurityWindows Server 2016Windows Server 2019

    Using Windows Defender Antivirus on Windows Server 2019 and 2016

    June 9, 2021

    Windows Defender Antivirus is Microsoft’s free built-in antivirus that comes installed by default on Windows Server 2016 and 2019 (since Windows 10 2004 the name Microsoft Defender is used). In…

  • SecurityWindows 10Windows Server 2016

    Dumping User Passwords from Windows Memory with Mimikatz

    May 18, 2021

    In this article, written as a part of a series devoted to Windows security, we will learn quite a simple method for getting passwords of all active Windows users using…

  • Active DirectoryGroup PoliciesSecurityWindows 10Windows Server 2019

    Hardening Windows Using Microsoft Security Baselines

    April 28, 2021

    Microsoft Security Baseline contains recommended settings Microsoft suggests for Windows workstations and servers to provide secure configuration and protect domain controllers, servers, computers, and users. Microsoft has developed reference Group…

  • Group PoliciesSecurityWindows 10Windows Server 2019

    How to Disable NetBIOS and LLMNR Protocols in Windows Using GPO?

    April 9, 2021

    The broadcast protocols NetBIOS over TCP/IP and LLMNR are used in most modern networks only for compatibility with legacy Windows versions. Both protocols are susceptible to spoofing and MITM attacks.…

  • Active DirectoryGroup PoliciesSecurityWindows Server 2012 R2Windows Server 2016

    Zerologon (CVE-2020-1472): Critical Active Directory Vulnerability

    December 4, 2020

    In August 2020, Microsoft released an update to fix a critical Windows Server vulnerability in Active Directory — CVE-2020-1472 (more known as Zerologon) . This update was successfully installed on…

  • Active DirectoryGroup PoliciesSecurityWindows Server 2012 R2

    How to Disable NTLM Authentication in Windows Domain?

    September 24, 2019

    NTLM (NT LAN Manager) has been used as the basic Microsoft authentication protocol for quite a long time: since Windows NT. Although Microsoft introduced a more secure Kerberos authentication protocol…

  • PowerShellSecurity

    Secure Password (Credentials) Encryption in PowerShell Scripts

    August 20, 2019

    Administrators often have to store passwords in automation scenario directly in the body of PowerShell scripts. As you know, it is extremely insecure when used in a productive environment, since…

  • Active DirectoryGroup PoliciesSecurity

    Securing Administrative (Priveleged) Accounts in Active Directory

    March 27, 2018

    In this article, I have tried to collect all major organizational and technical rules of using privileged / administrative accounts in the organization to improve security in the Windows network.…

  • SecuritySQL ServerWindows Server 2012 R2

    How to Obtain SeDebugPrivilege when Debug Program Policy is Enabled

    December 28, 2017

    In the previous article, we told that one of the ways to defending against mimikatz-like utilities is disabling the debug privilege for system administrators using Debug Program policy. However, recently…

  • Group PoliciesSecurity

    Defending Windows Domain Against Mimikatz Attacks

    December 7, 2017

    The IT community remembered late June, 2017, due to massive infection of many largest companies and government institutions in Ukraine, Russia, Germany, France and some other countries with a new…

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