A new one-click attack flow discovered by Varonis Threat Labs researchers underscores this fact. ‘Reprompt,’ as they’ve ...

Varonis found a “Reprompt” attack that let a single link hijack Microsoft Copilot Personal sessions and exfiltrate data; Microsoft patched it in January 2026.

Reprompt impacted Microsoft Copilot Personal and, according to the team, gave "threat actors an invisible entry point to perform a data‑exfiltration chain that bypasses enterprise security controls ...

The Reprompt Copilot attack bypassed the LLMs data leak protections, leading to stealth information exfiltration after the ...

Researchers identified an attack method dubbed "Reprompt" that could allow attackers to infiltrate a user's Microsoft Copilot session and issue commands to exfiltrate sensitive data.

Varonis Threat Labs has published a report detailing a now patched security exploit discovered in Copilot that let attackers ...

Security researchers Varonis have discovered Reprompt, a new way to perform prompt-injection style attacks in Microsoft ...

Reprompt is a Copilot exploit, that can use multi-stage prompts to steal user data, but thankfully it's already been patches.

Researchers have unveiled 'Reprompt', a novel attack method that bypasses Microsoft's Copilot AI assistant security controls, enabling data theft through a single user click.

The first Patch Tuesday (Wednesday in the Antipodes) for the year included a fix for a single-click prompt injection attack ...