Stop a Hidden Prompt From Hijacking Your AI Agent @MSFTMechanics

Uploaded July 2026 | Updated September 2026, 2 weeks ago

Can you stop a hidden instruction in a web page from hijacking your AI agent? A user pastes a competitor blog into the company-sanctioned Zava Assistant to summarize it — but buried in the text is a human-invisible instruction telling the model to leak her query history. Prompt injection protection in Microsoft Entra Suite inspects the outbound prompt against Microsoft's adversarial pattern model, matches the known injection class, and blocks it before it's ever processed.

▶ Full episode: youtu.be/81rnazsINB4
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#MicrosoftEntra #ZeroTrust #IdentitySecurity #SecureAI

Stop a Hidden Prompt From Hijacking Your AI Agent

Expose agent vulnerabilities before attackers do. #MicrosoftFoundry #AIAgents #AgentOps #AzureAI

Your agent. Your code. Work IQs grounding. #MicrosoftCopilot #Microsoft365 #AIAgents #Copilot

Add a layered approach to protect data. #DataSecurity #DataLossPrevention #Microsoft365 #AISecurity

New Data Security Posture Management | Microsoft Purview

$Cut context window creep. #TokenEconomics #MicrosoftFoundry #AICosts #GenerativeAI Control what youre billed on. Tokens are the currency of AI, and how you design your app determines how many you spend. Compress conversation history instead of resending it raw, cap output tokens with matching prompt instructions, and cache static context so each reuse costs a fraction of the first request. Route each prompt to the right model by complexity, or set Model Router in Microsoft Foundry to handle that automatically — balanced, quality, or cost mode. Then optimize the whole stack. Run Agent Optimizer to test your prompt, model, and tool configurations together and surface better setups. Use Toolbox to dynamically select only the tools each request needs and cut input token overhead by 90%. April Gittens, Microsoft Principal Cloud Advocate, joins Jeremy Chapman, Microsoft 365 Director, to share how to seize control of AI token spend through smarter app design. ► Unfamiliar with Microsoft Mechanics? As Microsofts official video series for IT, you can watch and share valuable content and demos of current and upcoming tech from the people who build it at Microsoft. • Subscribe to our YouTube: https://www.youtube.com/c/MicrosoftMechanicsSeries • Talk with other IT Pros, join us on the Microsoft Tech Community: https://techcommunity.microsoft.com/t5/microsoft-mechanics-blog/bg-p/MicrosoftMechanicsBlog • Watch or listen from anywhere, subscribe to our podcast: https://microsoftmechanics.libsyn.com/podcast ► Keep getting this insider knowledge, join us on social: • Follow us on Twitter: https://twitter.com/MSFTMechanics • Share knowledge on LinkedIn: https://www.linkedin.com/company/microsoft-mechanics/ • Enjoy us on Instagram: https://www.instagram.com/msftmechanics/ • Loosen up with us on TikTok: https://www.tiktok.com/@msftmechanics #TokenEconomics #MicrosoftFoundry #AICosts #GenerativeAI$

Your Image Scanner Cant See This Container Attack

Visual query execution plans, Copilot-generated fix. #PostgreSQL #AzureDatabase #AIData #CloudNative

Block labeled files from agent access #Cybersecurity, #AIAgents, #MicrosoftPurview, #DataSecurity

Contain data leaks immediately. #MicrosoftPurview #DataSecurity #Cybersecurity #DataBreach

Spot Conditional Access policy gaps. #MicrosoftEntra #SecurityCopilot #ConditionalAccess

Generate Power Apps Pages from a Prompt (Generative Pages)