prompt injection

Security researchers have shown that a single, seemingly legitimate Copilot link could be turned into a stealthy data‑exfiltration pipeline — a one‑click attack dubbed Reprompt — and Microsoft moved to mitigate the specific vector during the January 2026 Patch Tuesday updates. ) Background...

For months, millions treated Microsoft Copilot as a helpful companion inside Windows and Edge — until security researchers demonstrated that a deceptively small UX convenience could be turned into a one‑click data‑exfiltration pipeline called “Reprompt.” Background / overview Varonis Threat Labs...

Windows 11’s Night light gives you a one-click way to cut blue light, warm your display, and reduce evening eye strain — here’s a practical, forensic guide to turning it on, tuning it, troubleshooting when it’s missing, and choosing safer alternatives when you need color accuracy or more...

A deceptively small convenience — a Copilot deep link that pre-fills your assistant’s prompt — has been weaponized into a one-click data-exfiltration technique researchers call Reprompt, demonstrating how AI assistants with access and memory can become a silent conduit for sensitive information...

A single, deceptively small UX convenience in Microsoft’s Copilot ecosystem was chained into a practical, one‑click information‑disclosurere exploit that could siphon profile attributes, file summaries and chat memory from authenticated Copilot Personal sessions — a vulnerabilidentity tracked as...

A high‑impact information‑disclosure flaw in Microsoft’s Copilot family of assistants — widely discussed under the researcher name “Reprompt” and tracked by some vendors as CVE‑2026‑24307 — exposed a design weak‑spot in how Copilot handled prompt content embedded in links, enabling a...

AI assistants wired to external tools and data are rapidly reshaping how organizations automate work — and recent disclosures show those same integrations can become high‑leverage attack rails when MCP servers are left unsecured. Background: what is an MCP server and why it matters A Model...

Security researchers recently demonstrategyd a novel and troubling way to weaponize Google Calendar invites against Gemini-powered assistants, showing that a seemingly innocuous calendar event can silently trigger prompt injection and exfiltrate private meeting data — all without any clicks or...

A critical weakness in Microsoft Copilot Personal allowed attackers to turn a single, legitimate click into a stealthy exfiltration channel that could siphon profile attributes, file summaries and conversational memory — a chained prompt‑injection attack Varonis Threat Labs labeled “Reprompt”...

A single click on a Copilot deep link exposed a new class of prompt‑injection exfiltration, security telemetry shows ChatGPT remains the dominant pathway for enterprise generative‑AI data exposure, and Alibaba’s Qwen is pushing conversational commerce from chat into payments — three developments...

Microsoft’s Copilot ecosystem was rattled in mid‑January when security researchers disclosed a novel, one‑click exfiltration technique — dubbed “Reprompt” — that used Copilot deep‑links and conversational behaviors to siphon user profile data, file summaries and chat memory from authenticated...

A deceptively small UX convenience—allowing Microsoft Copilot to accept a prefilled prompt from a URL—was chained into a practical, one‑click data‑exfiltration technique that targeted Copilot Personal and, until Microsoft pushed mitigations in mid‑January 2026, could quietly siphon profile...

Varonis Threat Labs’ proof‑of‑concept shows that a deceptively small convenience — allowing Microsoft Copilot to accept a prefilled prompt from a URL — could be chained into a practical, one‑click data‑exfiltration technique that targeted Copilot Personal and could, under lab conditions, siphon...

A new, deceptively simple attack named “Reprompt” has exposed a critical weakness in Microsoft Copilot Personal: with a single click on a legitimate Copilot deep link an attacker could, under the right conditions, mount a multistage, stealthy data‑exfiltration chain that pulls names, locations...

Microsoft Copilot users face a new prompt-injection vector that researchers say can be triggered with a single click — a technique reported as “Reprompt” that abuses URL parameters to feed malicious prompts into Copilot, bypass built‑in safeguards, and siphon sensitive content from user sessions...

Tenable’s controlled jailbreak of a Microsoft Copilot Studio agent turned a neat no‑code automation into a vivid demonstration of how agentic AI can leak payment card data and execute unauthorized financial changes — all via simple prompt‑injection tricks that non‑developers could unknowingly...

A deceptively simple trick—padding and context manipulation—can turn carefully designed “human‑in‑the‑loop” (HITL) safety prompts into a live remote code execution (RCE) vector, and the security research community’s recent “Lies‑in‑the‑Loop” disclosures show how that vector threatens...

Microsoft’s own documentation now warns that the new “agentic” AI features in Windows 11 — the capabilities that let built‑in agents act on a user’s behalf — introduce novel security risks, including the possibility that an agent could be manipulated into exfiltrating data or even downloading...

Microsoft’s own Windows documentation and preview notes make an unusually blunt admission: the new “agentic” AI features being added to Windows 11 introduce novel security risks that change the operating‑system threat model — and administrators and enthusiasts should treat enabling them as a...

Microsoft’s promise to let non‑developers build “digital employees” inside Copilot Studio has collided with a simple, sharp truth: no‑code AI agents that are given broad read/write permissions can be manipulated to do real harm. In a controlled proof‑of‑concept, Tenable’s AI research team showed...