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Stop Repeated Active Directory Lockouts: Find the Caller Computer (Event ID 4740) with a PowerShell HTML + Email Report
Active DirectoryAutomationPowerShellSecurity

Stop Repeated Active Directory Lockouts: Find the Caller Computer (Event ID 4740) with a PowerShell HTML + Email Report

by antoniorennvickMay 12, 2026May 12, 2026

If you’ve ever dealt with “my account is locked again” tickets, you know the real pain isn’t unlocking the account — it’s finding what keeps locking it. When a user gets locked out in Active…

Active Directory Health Check with PowerShell – Full Forest Report & Interactive HTML Dashboard
Active DirectoryIdentity & Access ManagementMicrosoftPowerShellWindows Server

Active Directory Health Check with PowerShell – Full Forest Report & Interactive HTML Dashboard

by antoniorennvickMay 5, 2026May 7, 2026

Active Directory Health Check with PowerShell + HTML Dashboard Run a complete Active Directory health check using PowerShell and automatically generate a clean, readable HTML dashboard. This guide shows you how to assess domain health,…

Sample GPO Monthly Change Audit Report (HTML Output)
Active Directory

Sample GPO Monthly Change Audit Report (HTML Output)

by antoniorennvickMay 4, 2026May 4, 2026

This page contains a sample HTML output generated by an automated Group Policy Object (GPO) change comparison process. The report demonstrates how two scheduled GPO backup snapshots can be compared to clearly identify: Newly added…

Generating GPO Change Audit Reports Using PowerShell (Part 2)
Active DirectoryAutomationMicrosoftPowerShellSecurity & AuditingWindows ServerWindows Server

Generating GPO Change Audit Reports Using PowerShell (Part 2)

by antoniorennvickMay 4, 2026May 7, 2026

In Part 1, we automated Group Policy Object (GPO) backups using PowerShell and Task Scheduler. Backups alone are valuable—but their real power comes from visibility. Auditors don’t ask if you back up GPOs.They ask: “Show…

Automating Group Policy Object Backups with PowerShell and Task Scheduler (Part 1)
Active DirectoryMicrosoftPowerShellWindows Server

Automating Group Policy Object Backups with PowerShell and Task Scheduler (Part 1)

by antoniorennvickMay 4, 2026May 6, 2026

Group Policy Objects (GPOs) are a core component of Active Directory environments. They control security settings, user configurations, software deployment, and many other critical aspects of Windows infrastructure. Despite their importance, GPOs are often overlooked…

Building a Secure Self‑Service Admin Account Unlock Tool for Active Directory – Part 1
Active DirectoryIdentity & Access ManagementIdentity SecurityMicrosoftWindows Server

Building a Secure Self‑Service Admin Account Unlock Tool for Active Directory – Part 1

by antoniorennvickApril 28, 2026May 6, 2026

1. The Problem In many enterprise Active Directory environments, administrators use two accounts: A standard user account for daily workstation use A privileged admin account for RDP and administrative tasks Because admin accounts are used…

Top 10 Active Directory Attack Methods Every Security Professional Must Know
Active DirectoryActive Directory SecurityCybersecuritySecurity

Top 10 Active Directory Attack Methods Every Security Professional Must Know

by antoniorennvickApril 28, 2026May 4, 2026

Introduction: Why Active Directory Is the Ultimate Target Active Directory (AD) is the central nervous system of most enterprise environments. It governs authentication, authorization, identity management, and access control across users, systems, and applications. When…

The Evolution of Microsoft Entra ID: From Azure Active Directory to a Modern Identity Control Plane
Active DirectoryAzureMicrosoft Entra

The Evolution of Microsoft Entra ID: From Azure Active Directory to a Modern Identity Control Plane

by antoniorennvickApril 23, 2026May 7, 2026

Introduction Identity has become the new security perimeter. As organizations shift from on‑premises infrastructure to SaaS, IaaS, and multicloud workloads, traditional network-based security has proven insufficient. Microsoft anticipated this shift over a decade ago with…

Fixing Active Directory Time Drift in Hybrid/Virtualized Environments (The Definitive Troubleshooting & Remediation Guide)
Active DirectoryWindows Server

Fixing Active Directory Time Drift in Hybrid/Virtualized Environments (The Definitive Troubleshooting & Remediation Guide)

by antoniorennvickApril 23, 2026May 7, 2026

Estimated read time: 12–15 minutes. Why time drift in AD is a big deal Active Directory authentication depends on correct time. Kerberos has a strict tolerance window; when clocks drift, you get failed logons, random…

How to Send Password Expiry Reminder Emails with PowerShell and Microsoft Graph API (Certificate Auth)
Active DirectoryPowerShell

How to Send Password Expiry Reminder Emails with PowerShell and Microsoft Graph API (Certificate Auth)

by antoniorennvickApril 23, 2026May 7, 2026

Estimated read time: ~10–12 minutes Audience: Windows/AD administrators, M365/Entra admins, automation engineers Overview Password expiry is one of the most common causes of user lockouts and helpdesk calls. A small PowerShell automation that detects upcoming…

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Recent Posts

  • Stop Repeated Active Directory Lockouts: Find the Caller Computer (Event ID 4740) with a PowerShell HTML + Email Report
  • Azure AD / Microsoft Entra Conditional Access “Bypass” via Phantom Device Registration & PRT Abuse — A Deep Technical Breakdown
  • ConsentFix v3 and OAuth Consent Abuse in Microsoft Entra ID: Deep‑Dive Detection & Hardening for Microsoft 365
  • Active Directory Health Check with PowerShell – Full Forest Report & Interactive HTML Dashboard
  • Sample GPO Monthly Change Audit Report (HTML Output)

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