Michael has been an 'IT Pro' since 1998. He has worked predominantly in the Windows world including client and server operating systems, on-prem systems engineering (AD, DNS, etc.), and over the last ten years or so has embraced and immersed himself in all things Microsoft 365 - including Exchange Online, SharePoint Online, Teams, OneDrive, and Azure Active Directory (AAD). He has written articles here on Petri based on these technologies and also published a larger series about 'Upgrading to Windows Server 2022' this past summer. Michael strives to help other IT Pros with getting more efficient (especially with PowerShell) in their day-to-day tasks and offering solid assistance on larger projects.
Last Update: Feb 20, 2024
Ransomware protection is one the most important topics for IT Pros and C-Level technology executives. Learn how immutable backups and immutable storage help to protect your organization against data corruption and loss, malware, viruses, and ransomware – and how to implement them. This post is sponsored by Object First Veeam 2023 Ransomware trends report – most ransomware targets backups In May…
Last Update: Feb 19, 2024
Icacls is a Windows command-line utility that IT admins can use to change access control lists on files and folders. One of the most common tasks that an IT Pro or system administrator performs is modifying permission on a file server. Using the icacls command is a very efficient way to do that, and we’ll…
Last Update: Feb 16, 2024
When newly installed, Active Directory’s (AD) default configuration is designed to be easy to use. As a result, attackers can exploit AD to take over your entire network with relative ease. Here’s what you can do to further protect your organization by reducing your Active Directory attack surface. Securing beyond the default settings to reduce…
Last Update: Feb 15, 2024
Audit your Active Directory environment to ensure the security of your company’s most valuable assets. Here are the top 10 events to audit in Active Directory to identify risks. Why audit Active Directory? Active Directory provides authentication, account management, and authorization services that are critical for strong access governance. To quickly detect insider threats, organizations should audit the creation of new accounts and security groups, and…
Last Update: Feb 12, 2024
Azure Active Directory (AD) is Microsoft’s cloud-based identity and access management (IAM) cloud service. Azure AD is generally seen as a move from on-premises IAM to the cloud. Learn more about Azure AD here. What is Azure Active Directory (Microsoft Entra ID)? Microsoft Azure Active Directory (Azure AD, AAD, Entra ID, etc.) is a cloud…
Last Update: Feb 12, 2024
Azure Active Directory (Azure AD) B2C is a cloud-based customer identity and access management service that provides business-to-customer (B2C) Identity-as-a-Service. It allows organizations to secure and manage their customer-facing applications – so external parties can seamlessly sign up and log in. Learn more about the features and benefits of Azure AD B2C below. What is…
Discover the benefits of using Azure AD B2B in your organization. Learn how it can improve collaboration and streamline access for external partners, and boost your users’ productivity, safely and securely. What is Azure B2B? Microsoft Entra B2B (formerly Azure AD B2B) is a feature/service within the Microsoft Entra ID that allows collaboration between your…
Last Update: Dec 05, 2023
Exchange Online PowerShell is a command-line tool that allows you to manage your Exchange Online mailboxes and users. It can be used to perform a variety of tasks, such as creating and managing mailboxes, configuring mail flow rules, and managing user permissions. In this guide, we’ll show you how to install and connect to Exchange…
Last Update: Nov 15, 2023
PsExec is a command-line utility program for Windows written by none other than Mark Russinovich, the current CTO of Microsoft Azure. It’s still being updated as part of the SysInternals suite of utilities. PsExec allows you to run programs locally, and, more importantly, on remote computers. You can even kick off similar commands on multiple…
The Get-ADComputer PowerShell cmdlet is a powerful tool for managing AD computers. It can be used to retrieve information about computer objects, search for computer objects based on specific criteria, and perform various actions on computer objects. What is Get-ADComputer used for? Get-ADComputer is a PowerShell cmdlet that retrieves one or more computers from Active…