Scheduling attack simulations

hi lfk73​ 

Yes, Microsoft Defender for Office 365’s Attack Simulation Training (AST) doesn't currently support fully automated monthly batch scheduling out-of-the-box across randomized or evenly distributed user groups. However, there are workarounds you can implement to achieve your goal of sending smaller simulation batches across 12 months, without manually creating each campaign every time.

a.Create 12 Azure AD Groups (One per Month)

Create groups like:

• Phishing-Sim-Group-Jan………Phishing-Sim-Group-Dec

Each group should contain ~250 users (3000/12).

You can:

• Manually assign users in a spreadsheet
• Or use PowerShell or Azure AD dynamic group rules if you have attributes (like employee ID, join date, etc.)

b.Create 12 Simulations Now (One for Each Group)

In Defender → Attack simulation training:

• Create 12 simulations
• Target each month’s group
• Schedule each one to start on the 1st (or desired date) of that month
• Pick different templates and payloads to keep it varied

Alternatively, you can automate using power automate. hope this helps