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On Tuesday, November 18, 2025 (local time), Cloudflare, a prominent U.S. cybersecurity service provider, suffered a worldwide network outage. This incident disrupted normal access for some users to websites including ChatGPT and the social media platform X. Prior to the opening of the U.S. stock market, Cloudflare's stock price plummeted by nearly 4%. The company announced that it was actively investigating the root cause of the problem. It's worth noting that its customer support portal had already been experiencing glitches prior to this outage. This network failure was not confined to a particular geographical area; rather, it had a global reach. Users from Europe, the United States, and the Asia - Pacific region all reported encountering problems. As of 9 p.m. Beijing time, a significant number of users were still struggling to use the affected applications as usual.
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