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# OpenAI patches DNS side-channel that leaked ChatGPT data
- URL: https://adjacent.media/signals/openai-patches-dns-side-channel-that-leaked-chatgpt-data/
- Published: 2026-03-31T10:18:08.000Z
- Updated: 2026-04-02T09:55:01.000Z
- Description: Check Point researchers discovered that ChatGPT’s outbound controls filtered web traffic but left DNS queries—typically treated as low-risk infrastructure—unmonitored, creating a direct exfiltration path that OpenAI has now closed. This reveals a gap between security theater (blocking obvious dat...
- Author: Jonathan Greene
- Tags: #signal, theme-connected, cybersecurity

Source: [The Register](https://go.theregister.com/feed/www.theregister.com/2026/03/30/openai%5Fchatgpt%5Fdns%5Fdata%5Fsnuggling%5Fflaw/?ref=adjacent.media)

Check Point researchers discovered that ChatGPT’s outbound controls filtered web traffic but left DNS queries—typically treated as low-risk infrastructure—unmonitored, creating a direct exfiltration path that OpenAI has now closed. This reveals a gap between security theater (blocking obvious data escape routes) and actual defense-in-depth, where defenders must treat every protocol, including nominally “safe” ones like DNS, as a potential attack surface. For enterprises deploying AI services, vendor security claims require adversarial testing, not trust—and cloud-hosted AI increases the risk surface that needs monitoring.