Jake Williams, chief technical officer of the cybersecurity firm BreachQuest, said that while foul play cannot be completely ruled out, chances are good that the outage is "an operational issue" caused by human error. If Facebook's DNS records disappeared, apps and web addresses would be unable to locate it. DNS translates an address like "" to an IP address like 123.45.67.890. Such routes are part of the internet's domain name system, or DNS, a key structure that determines where web traffic needs to go. So many people are reliant on Facebook, WhatsApp or Instagram as a primary mode of communication that losing access for so long can make them vulnerable to criminals taking advantage of the outage, said Rachel Tobac, a hacker and CEO of SocialProof Security. ![]() Regarding the internal failures, Instagram head Adam Mosseri tweeted that it feels like a "snow day." The stricken content-delivery company in that case, Fastly, blamed it on a software bug triggered by a customer who changed a setting.įacebook's only public comment so far was a tweet in which it acknowledged that "some people are having trouble accessing Facebook app" and that it was working on restoring access. The last major internet outage, which knocked many of the world's top websites offline in June, lasted less than an hour. "This is epic," said Doug Madory, director of internet analysis for Kentik Inc. Websites and apps often suffer outages of varying size and duration, but hours-long global disruptions are rare. The company did not say what might be causing the outage, which began around 8:40 a.m. Service had still not been restored as of 2 p.m. Facebook's internal systems used by employees also went down. ![]() Facebook and its Instagram and WhatsApp platforms suffered a worldwide outage that has extended for more than three hours on Monday.
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