Kerberos Attack

Active Directory Security

What is AS-REP Roasting Exploitation: A Comprehensive Guide

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Introduction AS-REP Roasting is a critical attack technique that exploits a fundamental misconfiguration in Kerberos authentication, particularly within Active Directory environments. This sophisticated attack specifically targets user accounts where Kerberos pre-authentication has been disabled, allowing attackers to extract and crack user password hashes offline without triggering account lockouts or generating significant security alerts. In modern enterprise networks, Active Directory serves

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Active Directory Security / Vulnerabilities and Exploits

Certighost (CVE-2026-54121): How Low-Privilege Users Impersonate Domain Controllers

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Certighost (CVE-2026-54121) How Low-Privilege Users Impersonate Domain Controllers

Introduction Active Directory Certificate Services (AD CS) serves as a foundational component in modern enterprise identity environments, facilitating public key infrastructure (PKI), machine authentication, VPN access, and smart card logins. However, misconfigurations and deep-seated flaws in how Enterprise Certificate Authorities (CAs) process incoming certificate requests or resolve directory objects can create severe privilege escalation vectors. The Certighost vulnerability (CVE-2026-54121) exposes a critical breakdown in this identity trust boundary, allowing an

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Active Directory Security

What is DCSync Attack and Mimikatz Usage in Active Directory

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What is DCSync Attack and Mimikatz Usage in Active Directory

Introduction Active Directory (AD) serves as the backbone of enterprise IT infrastructure, managing user authentication, access control, and security policies across organizational networks. However, this critical infrastructure is frequently targeted by sophisticated attackers seeking to gain unauthorized access and maintain persistence within corporate environments. One of the most devastating attacks against Active Directory is the DCSync attack, a technique that leverages legitimate directory replication mechanisms

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Active Directory Security / Network Security

What are Pass-the-Hash and Pass-the-Ticket Attacks: A Comprehensive Guide

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What are Pass-the-Hash and Pass-the-Ticket Attacks A Comprehensive Guide

Introduction In contemporary cybersecurity, attackers continuously evolve their methods, moving beyond conventional password cracking and brute-force attacks to exploit the deeper weaknesses in authentication systems. Among the most serious threats to enterprise networks are Pass-the-Hash (PtH) and Pass-the-Ticket (PtT) attacks, which allow attackers to leverage stolen authentication material directly—whether in the form of hashed passwords or Kerberos tickets—without ever needing to obtain plaintext

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