Create 2025-04-14-content.md (#5281)

* Create 2025-04-14-content.md

* Update blog-cse/2025-04-14-content.md

Co-authored-by: Kim (Sumo Logic) <[email protected]>

* Updates from review

---------

Co-authored-by: John Pipkin (Sumo Logic) <[email protected]>
Co-authored-by: Kim (Sumo Logic) <[email protected]>

Author: 3 people

blog-cse/2025-04-14-content.md

@@ -0,0 +1,81 @@
+---
+title: April 14, 2025 - Content Release
+image: https://help.sumologic.com/img/sumo-square.png
+keywords:
+  - log mappers
+  - parsers
+  - rules
+hide_table_of_contents: true    
+---
+
+import useBaseUrl from '@docusaurus/useBaseUrl';
+
+This content release includes:
+- Additional data requirements for GitHub rules added to rule descriptions.
+- Spelling corrections for AWS Lambda rules.
+- New Slack Anomaly Event log mapper and supporting parsing changes:
+   - Enables passthrough detection of Slack Anomaly Events using Normalized Security Signal (MATCH-S00402).
+   - Requires parser be defined for passthrough detection.
+- Updates to Sysdig parsing and mapping to support additional events.
+- Support for Microsoft Windows Sysmon-29 event.
+- Additional normalized field mappings for Microsoft Windows Sysmon events.
+- New `user_phoneNumber` and `targetUser_phoneNumber` schema fields.
+
+
+### Rules
+- [Updated] MATCH-S00874 AWS Lambda Function Recon
+- [Updated] MATCH-S00952 GitHub - Administrator Added or Invited
+- [Updated] MATCH-S00953 GitHub - Audit Logging Modification
+- [Updated] MATCH-S00954 GitHub - Copilot Seat Cancelled by GitHub
+- [Updated] FIRST-S00091 GitHub - First Seen Activity From Country for User
+- [Updated] FIRST-S00090 GitHub - First Seen Application Interacting with API
+- [Updated] MATCH-S00950 GitHub - Member Invitation or Addition
+- [Updated] MATCH-S00955 GitHub - Member Permissions Modification
+- [Updated] MATCH-S00956 GitHub - OAuth Application Activity
+- [Updated] MATCH-S00957 GitHub - Organization Transfer
+- [Updated] OUTLIER-S00026 GitHub - Outlier in Distinct User Agent Strings by User
+- [Updated] OUTLIER-S00027 GitHub - Outlier in Repository Cloning or Downloads
+- [Updated] MATCH-S00958 GitHub - PR Review Requirement Removed
+- [Updated] MATCH-S00959 GitHub - Repository Public Key Deletion
+- [Updated] MATCH-S00960 GitHub - Repository Transfer
+- [Updated] MATCH-S00961 GitHub - Repository Visibility Changed to Public
+- [Updated] MATCH-S00962 GitHub - Repository Visibility Permissions Changed
+- [Updated] MATCH-S00963 GitHub - SSH Key Created for Private Repo
+- [Updated] MATCH-S00964 GitHub - SSO Recovery Codes Access Activity
+- [Updated] MATCH-S00951 GitHub - Secret Scanning Alert
+- [Updated] MATCH-S00965 GitHub - Secret Scanning Potentially Disabled
+- [Updated] MATCH-S00966 GitHub - Two-Factor Authentication Disabled for Organization
+
+### Log Mappers
+- [New] Slack Anomaly Event
+- [New] Windows - Microsoft-Windows-Sysmon/Operational - 16
+- [New] Windows - Microsoft-Windows-Sysmon/Operational - 19|20
+- [New] Windows - Microsoft-Windows-Sysmon/Operational-29
+- [Updated] Sysdig Secure Packages
+- [Updated] Sysdig Secure Vulnerability
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 1
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 2
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 3
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 4
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 5
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 6
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 7
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 8
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 9
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 10
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 11
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 15
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 17
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 18
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 23
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 24
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 26
+- [Updated] Windows - Microsoft-Windows-Sysmon/Operational - 27
+
+### Parsers
+- [New] /Parsers/System/Slack/Slack Enterprise Audit
+- [Updated] /Parsers/System/Sysdig/Sysdig Secure
+
+### Schema
+- [New] `targetUser_phoneNumber`
+- [New] `user_phoneNumber`