Author name: Antonio Rennvick

Antonio Rennvick is an IT Infrastructure Manager with 15+ years running enterprise Active Directory, Microsoft 365, and Azure environments. He's Microsoft certified (AZ-104, MS-102) and writes Core365 Cloud to share what actually works in production—PowerShell automation, AD deep dives, and security hardening drawn from real-world work, not test labs.

Active Directory

Sample GPO Monthly Change Audit Report (HTML Output)

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: This type of report is especially valuable during security audits, compliance reviews, and internal change management, where administrators are required to prove […]

Active Directory Automation Microsoft PowerShell Security & Auditing Windows Server

Generating GPO Change Audit Reports Using PowerShell (Part 2)

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 me what changed during this period.” In this post (Part 2), we’ll walk through how to compare two GPO backup

Active Directory Microsoft PowerShell Windows Server

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

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 when it comes to regular backups. In this post (Part 1), we’ll cover why GPO backups matter, how to back

Active Directory Active Directory Security Cybersecurity Security

Top 10 Active Directory Attack Methods Every Security Professional Must Know

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 Active Directory is compromised, attackers often gain complete control of the organization. Modern attackers rarely rely on single exploits. Instead,

Cloud Identity Enterprise Security Microsoft Intune PKI & Certificates

Microsoft Intune Cloud PKI: A Deep Technical Dive into Architecture, Security, and Deployment

Estimated Reading Time: 18–20 minutes Public Key Infrastructure (PKI) has always been a necessary evil in enterprise IT—powerful, security‑critical, and operationally complex. With the introduction of Microsoft Intune Cloud PKI, Microsoft is transforming traditional PKI into a fully cloud‑native, managed service tightly integrated with endpoint management and identity. This article provides a deep technical exploration

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