data exfiltration

Microsoft’s March Patch Tuesday pulled back a small, alarming corner of how modern productivity suites and agentic AI can interact — a cross‑site scripting flaw in Microsoft Excel that, when combined with the new Copilot Agent behavior, can be turned into a true zero‑click data‑exfiltration...

Microsoft's March 10, 2026 Patch Tuesday brought a sharp reminder that legacy vulnerability classes can take on unexpected power when combined with modern AI assistants: a Microsoft Excel flaw (tracked as CVE-2026-26144, CVSS 7.5) can be weaponized as a zero-click data-exfiltration path when...

A critical Microsoft Excel flaw disclosed in the March 2026 Patch Tuesday has opened a new, unsettling vector for data theft: a cross‑site scripting (XSS) bug that can be weaponized to make Microsoft’s Copilot Agent silently exfiltrate information without any user interaction — a true zero‑click...

Microsoft Defender’s recent investigation shows a deceptive new vector for corporate data leakage: malicious Chromium‑based browser extensions that impersonate trusted AI assistant tools and quietly siphon LLM chat histories and browsing telemetry from users — at scale and with real-world...

Microsoft’s recent changes have finally untangled one of Windows 11’s most persistent irritations: setting a third‑party browser as the operating system’s default is now far less painful than it was at launch, and regulatory pressure in Europe has pushed the company even further toward...

Microsoft's public promise to "fix Windows 11" this year is not a marketing flourish — it's a direct response to hard, visible pain across the platform, and the company is now mobilizing a formal "swarming" effort to address the problems users and testers have been raising. Pavan Davuluri, who...

Security researchers have shown that a single, seemingly legitimate Copilot link could be turned into a stealthy data‑exfiltration pipeline — an attack chain the research community has labeled “Reprompt” — and the discovery raises urgent questions for anyone who uses Microsoft Copilot Personal...

Two Visual Studio Code extensions posing as helpful AI coding assistants have been linked to mass data theft that may have affected more than 1.5 million installs, with researchers saying the add-ons quietly uploaded whole files and workspace data to attacker-controlled servers in China...

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...

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...

Security researchers have discovered a deceptively simple but dangerous exploit that could turn a single click on a legitimate Microsoft Copilot link into a live data‑exfiltration pipeline — a vulnerability the research community has labeled “Reprompt,” and one that Microsoft moved to mitigate...

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...

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”...

The security conversation around generative AI and agentic tooling hardened this week in a way that should make every Windows administrator, CISO, and IT procurement lead pay attention: concentrated exposure from a handful of consumer AI apps, emergent server‑side exfiltration mechanics...

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...

A deceptively small UX convenience — letting Copilot accept a prefilled prompt from a URL — was chained into a practical, one‑click data‑exfiltration technique that security researchers named Reprompt, and the discovery forced a rapid hardening of Microsoft’s consumer Copilot surface during...

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 security researchers named “Reprompt,” and the discovery has exposed how quickly assistant conveniences can become...

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...