VIDEO

The AI Insider Threat: EchoLeak and the Rise of Zero-Click Exploits

Video Summary:
Can your AI assistant become a silent data leak? In this episode of Cyberside Chats, Sherri Davidoff and Matt Durrin break down EchoLeak, a zero-click exploit in Microsoft 365 Copilot that shows how attackers can manipulate AI systems using nothing more than an email. No clicks. No downloads. Just a cleverly crafted message that turns your AI into an unintentional insider threat.  They also share a real-world discovery from LMG Security’s pen testing team: how prompt injection was used to extract system prompts and override behavior in a live web application. With examples ranging from corporate chatbots to real-world misfires at Samsung and Chevrolet, this episode unpacks what happens when AI is left untested—and why your security strategy must adapt.  Key Takeaways  ▪ Limit and review the data sources your LLM can access—ensure it doesn’t blindly ingest untrusted content like inbound email, shared docs, or web links.  ▪ Audit AI integrations for prompt injection risks—treat language inputs like code and include them in standard threat models.  ▪ Add prompt injection testing to every web app and email flow assessment, even if you’re using trusted APIs or cloud-hosted models.  ▪ Red-team your LLM tools using subtle, natural-sounding prompts—not just obvious attack phrases.  ▪ Monitor and restrict outbound links from AI-generated content, and validate any use of CSP-approved domains like Microsoft Teams.  Resources  EchoLeak technical breakdown by Aim Security: https://www.aim.security/lp/aim-labs-echoleak-blogpost LMG Security Blog: Prompt Injection in Web Apps: https://www.lmgsecurity.com/are-your-ai-backed-web-apps-secure Chevrolet chatbot tricked into $1 car deal: https://www.businessinsider.com/car-dealership-chevrolet-chatbot-chatgpt-pranks-chevy-2023-12 Microsoft 365 Copilot Overview: https://www.microsoft.com/en-us/microsoft-365/blog/2023/03/16/introducing-microsoft-365-copilot-a-whole-new-way-to-work/ Don't forget to like and follow for the latest cybersecurity advice! #EchoLeak #Cybersecurity #Cyberaware #CISO #Microsoft #Microsoft365 #Copilot #AI #GenAI #AIsecurity #RiskManagement
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