Ex-Eaton dev Davis Lu gets 4 years in prison
Planted a kill switch that:
– Crashed servers via infinite Java threads
– Deleted coworker profile files
– Locked out users when IsDLEnabledinAD returned false (i.e. when he was deactivated)

Triggered on his account disablement, impacting thousands globally
Smart, but not smart enough

@TomsHardware

https://www.tomshardware.com/tech-industry/dev-plants-kill-switch-in-ex-employers-network-that-crashed-servers-and-deleted-files-gets-four-years-in-the-slammer-kill-switch-triggered-by-devs-removal-from-active-directory-when-fired

Ich bräuchte mal wieder #followerpower:

In einem MS #activedirectory wie organisiert ihr da User und Gruppen?
Was sind so Best Practices bei einem AD, gerne auch einen Link in die Kommentar zur Lektuere.

Hintergrund:
Ich habe das Gefuehl, dass unser geerbetes AD etwas unstrukturiert ist. So finden sich Gruppen innerhalb der CN=Users. Ich wuerde ausserhalb von Users eigentlich eher sowas wie eine OU=Groups erwarten.
Zudem will ich NIS auf einigen Linux-Kisten durch eine LDAP-Anbindung an das AD abloesen.
Es sind ca. 300 User, die aber mitunter relativ stark fluktieren (Studenten).

Bin fuer Tipps und Ideen dankbar!

PowerShell Active Directory Management in 2025: The Definitive Guide | https://tinyurl.com/2c34eubt | #2025Tech #ActiveDirectory #ADAutomation #PowerShell7 #SecurityAudit #UserManagement #WindowsServer2022 
https://tinyurl.com/2c34eubt

PowerShell Active Directory Management in 2025: The Definitive Guide | https://tinyurl.com/25cgf2e7 | #2025Tech #ActiveDirectory #ADAutomation #PowerShell7 #SecurityAudit #UserManagement #WindowsServer2022 
https://tinyurl.com/25cgf2e7

Super. I was really hoping to walk into domain trust and PKI issues today.

Windows Server 2025 domain controllers face a critical schema master bug creating duplicate entries in Active Directory. This breaks replication to older DCs, causing schema conflicts that administrators can't resolve. Some reported complete AD failures requiring full rebuilds. #WindowsServer2025 #ActiveDirectory

https://pupuweb.com/why-is-windows-server-2025-schema-master-role-breaking-active-directory/

PowerShell Script to Browse and Export Active Directory Security Groups | https://tinyurl.com/26wvpsrz | #ActiveDirectory #Guide #Microsoft #Powershell #refresh #Windows 
https://tinyurl.com/26wvpsrz

PowerShell Script to Browse and Export Active Directory Security Groups | https://tinyurl.com/22bg59sw | #ActiveDirectory #Guide #Microsoft #Powershell #refresh #Windows 
https://tinyurl.com/22bg59sw

Browsing and Exporting Active Directory Security Groups with PowerShell | https://tinyurl.com/233hoday | #ActiveDirectory #Domain #Guide #Microsoft #Powershell #refresh 
https://tinyurl.com/233hoday

Browsing and Exporting Active Directory Security Groups with PowerShell | https://tinyurl.com/22e835cr | #ActiveDirectory #Domain #Guide #Microsoft #Powershell #refresh 
https://tinyurl.com/22e835cr

iX-Workshop: Lokales Active Directory gegen Angriffe absichern

Lernen Sie, wie Angreifer Active Directory kompromittieren und wie Sie Ihre AD-Umgebung effektiv vor Ransomware und anderen Cyberangriffen schützen.

https://www.heise.de/news/iX-Workshop-Lokales-Active-Directory-gegen-Angriffe-absichern-10508305.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&utm_source=mastodon

iX-Workshop: Active Directory Hardening – Vom Audit zur sicheren Umgebung

Lernen in einer Übungsumgebung: Sicherheitsrisiken in der Windows-Active-Directory-Infrastruktur erkennen und beheben, um die IT vor Cyberangriffen zu schützen.

https://www.heise.de/news/iX-Workshop-Active-Directory-Hardening-Vom-Audit-zur-sicheren-Umgebung-10508279.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&utm_source=mastodon

Nächste Woche: Sicheres Windows-Netz mit Tiering und PAWs

Wer ein Active Directory betreibt, sollte Ebenen trennen und gesicherte Admin-Workstations nutzen. Dieses Webinar gibt praktische Hilfe bei der Umsetzung.

https://www.heise.de/news/Naechste-Woche-Sicheres-Windows-Netz-mit-Tiering-und-PAWs-10514105.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&utm_source=mastodon

Understanding Keycloak: An Identity Management Solution for .NET Developers

https://www.jocheojeda.com/2025/08/05/understanding-keycloak-an-identity-management-solution-for-net-developers/

Replication Summary on Domain Controllers | https://tinyurl.com/2arnklr7 | #Guide #Microsoft #Servers #Windows#DomainControllers #ReplicationSummary #NetworkAdministration #ITInfrastructure #DataReplication #ActiveDirectory #ServerManagement #MastodonTech #CyberSecurity #TechUpdates 
https://tinyurl.com/2arnklr7

Replication Summary on Domain Controllers | https://tinyurl.com/2yvn55br | #Guide #Microsoft #Servers #Windows#DomainControllers #ReplicationSummary #ITInfrastructure #NetworkAdministration #ServerManagement #ActiveDirectory #DataReplication #NetworkSecurity #DataBackup #TechManagement 
https://tinyurl.com/2yvn55br

Anyone did the HTB AD Pentester already? Is it good?

Active Directory Tools: Installation, Management, and Automation | https://techygeekshome.info/aduc-tools/?fsp_sid=5741 | #ActiveDirectory #aduc #azuread #Powershell #RSAT #Server2022 #Windows11 
https://techygeekshome.info/aduc-tools/?fsp_sid=5741