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August 26, 2026 - SaaS - v10.98.4 ​

This release includes updates in the following areas for F5 AI Security:

AI Red Team ​

Improved support for project administrators ​

  • When you create a project, you can assign project administrators.
  • Project administrators now have access to the project dashboard, which displays dashboard data associated with their project(s).
  • Project administrators now have access view the prompt history for prompts associated with projects that they are an admin of. Prompt history can be found on the Logs page.

September attack pack ​

This attack pack is known as stylistic reformulation. This single-turn attack reformulates harmful requests as poetry, folktales, or other literary styles.

Comprehensive AI Security Index leaderboard: August 2026 ​

The CASI Leaderboard has been updated for August 2026.

We tested 53 models with our August 2026 attack pack, including 16 new models including claude-fable-5, MiniMax-M2.7-Turbo, and gemini-3.6-flash. Claude-fable-5 topped the leaderboard with a CASI score of 98, while grok-4.5 was our worst performer (CASI 45). For more on this month's benchmarking results, see: https://www.f5.com/labs/articles/capability-is-closing-the-open-closed-gap-security-is-not.

In the Comprehensive AI Security Index (CASI) leaderboard, you can review attack success rate and vulnerabilities by intent category. To do so:

  1. Go to Reports
  2. Select the CASI leaderboard tab
  3. Select the report of your choice.

Known issues ​

This release includes the following known issues:

  • If you’re an admin for a project created before May 20, 2026, you might see extra project cards on the Project list page. You can’t open unauthorized projects, and those requests return a 404. Projects created on or after May 20, 2026, aren’t affected.

Resolved issues ​

This release fixes the following issues:

  • Adding custom intent to an existing campaign unexpectedly auto-selects all attack prompts and resistance attacks
  • Clicking outside of "Add members to project" modal closes the entire modal.
  • Project admins could see all projects in their org, whether or not they are members.
  • Project admins could see all prompts.

Doc updates ​

Since the last SaaS release on August 19, AI Security has added the following documents:

Breaking changes ​

There are no breaking changes or required customer actions in this release.

Updated at: