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404 Media first asked Signal for comment in early December. The organization did not provide a statement in time for publication, but daniel shared their response to his bug report. “What you're describing (observing cache hits and misses) is a generic property of how Content Distribution Networks function. Signal's use of CDNs is neither unique nor alarming, and also doesn't impact Signal's end-to-end encryption. CDNs are utilized by every popular application and website on the internet, and they are essential for high-performance and reliability while serving a global audience,” Signal’s security team wrote.