Grok exfiltrates user data when malicious instructions are encrypted
Source: BleepingComputer· JohnC_21· August 20, 2026
SynaBot summary
A security flaw in Microsoft 365 Copilot allows malicious prompts to extract sensitive user data, even when encrypted. Researchers discovered the vulnerability, which could expose confidential information to unauthorized parties.
Key takeaways
- Microsoft 365 Copilot has a data exfiltration vulnerability.
- Encrypted malicious prompts can trigger data leaks.
- Sensitive user information may be compromised.
- Security vigilance is crucial for AI tool users.
Why it matters
This vulnerability highlights the critical need for robust security in AI assistants used for work. Employees must be aware that even seemingly secure AI tools can pose data leakage risks if not properly managed and monitored.
This story was reported by BleepingComputer. Read the full original article:
Read on BleepingComputer Try this on SynaBot
Related AI assistants, prompts, and tools from the SynaBot catalog.
AI Prompts
- User Story Generator: 90-Minute for B2B
- User Story Generator: Nonprofit SystemGenerate rigorous, development-ready user stories for a nonprofit management system with detailed acceptance criteria, priority levels, and nonprofit-specific context, ideal for product managers and business analysts.
- Data Cleaning Workflow: TikTok Plan
AI Tools
- DataikuDataiku is an end-to-end data science and machine learning platform that supports data preparation, model building, and deployment. It enables teams to collaborate on AI projects across the organization.
- DataScope AIDataScope AI provides continuous monitoring of your data assets, detecting anomalies, drifts, and inconsistencies. It ensures data reliability and helps maintain high-quality data pipelines.
- DataramaDatarama combines advanced data analytics with network mapping to provide deep insights into complex data relationships. It's particularly strong for due diligence and risk assessment with public data.
![NVIDIA Is Plotting Its China Comeback Via A New LPU-Based Inference Chip, As SMIC Rides US Export Controls To A Virtual China Monopoly [Update: NVIDIA Denies]](https://images.weserv.nl/?url=cdn.wccftech.com%2Fwp-content%2Fuploads%2F2026%2F05%2FNVIDIA-China.jpg&w=800&output=webp&we&il)