Update February 2026

Author: alexverboon

docs/learn.md

@@ -40,6 +40,10 @@
 - [Microsoft Entra Suite: Comprehensive Zero Trust user access at your fingertips](https://www.youtube.com/watch?v=olAqPx7CTcM&list=PLmAptfqzxVEXzNRk276m5ssJk4YOM1H3w)
 - [Microsoft Entra Suite](https://www.youtube.com/watch?v=olAqPx7CTcM&list=PLmAptfqzxVEXzNRk276m5ssJk4YOM1H3w)
 
+## Defender for Identity
+
+- [TechExcel: Defender for Identity (level 300 / CSU) lab](https://microsoft.github.io/TechExcel-Defender-for-Identity/)
+
 ## Microsoft Cybersecurity Architect (SC-100)
 
 - [Video Training](https://www.youtube.com/playlist?list=PLahhVEj9XNTfRZMathQ5fn1akTwV7R3w_)

docs/sentinel.md

@@ -662,6 +662,11 @@
 - [Microsoft Sentinel - SEC Operations](https://github.com/eshlomo1/Microsoft-Sentinel-SecOps)
 - [Log Splitr](https://github.com/TheCloudScout/log-splitr)
 - [Azure DevOps detection rules](https://github.com/alexverboon/Hunting-Queries-Detection-Rules/tree/main/AzureDevOps)
+- [ASIM Parsers Index](https://github.com/oshezaf/sentinelninja/blob/main/Solutions%20Docs/asim/asim-index.md)
+
+## Tools
+
+- [Sentinel Data Lake Cost Calculator](https://tokesi.cloud/exp/datalake)
 
 ## Learning and Training
 

docs/social.md

@@ -21,6 +21,7 @@
 - [Steven Lim](https://bsky.app/profile/stevenlim.bsky.social)
 - [Ugur Koc](https://bsky.app/profile/ugurkoc.de)
 - [Olaf Hartong](https://bsky.app/profile/olafhartong.nl)
+- [Tom Rolvers](https://bsky.app/profile/securitywithtom.bsky.social)
 - [Maarten Goet](https://bsky.app/profile/maartengoet.com)
 - [Ru Campell](https://bsky.app/profile/campbell.scot)
 - [Suryendu Bhattacharyya](https://bsky.app/profile/crookedbong.bsky.social)
@@ -95,6 +96,7 @@
 - [Ru Campell](https://twitter.com/rucam365)
 - [Sami Lamppu](https://twitter.com/samilamppu)
 - [Thijs](@thijslecomte)
+- [Tom Rolvers](https://x.com/securitywithtom)
 - [Thomas Kurth](https://twitter.com/ThomasKurth_ch)
 - [Thomas Naunheim](https://www.linkedin.com/in/thomasnaunheim/)
 - [Thomas Verheyden](https://x.com/ThomasVrhydn)