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The Shared Clipboard Inside the Sandbox: Cross-Account Data Leakage in ChatGPT

medcheckpoint_researchPublished 2026-09-08

<p class="wp-block-paragraph">Research by: <strong>Alexey Bukhteyev</strong></p>

<h1 class="wp-block-heading"><strong>Key Takeaways</strong></h1>

<ul class="wp-block-list"> <li>Check Point Research discovered a covert cross-account command channel through which an attacker could use a victim’s ChatGPT session to execute hidden tasks with the tools, data, and connected apps available to that

MITRE ATT&CK techniques

Indicators of compromise

Original source: https://research.checkpoint.com/2026/the-shared-clipboard-inside-the-sandbox-cross-account-data-leakage-in-chatgpt/