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In this case, though, something more serious appears to be afoot. They can happen for all kinds of wonky technical reasons, often related to configuration issues, and can be relatively straightforward to resolve. DNS is often referred to as the internet’s phone book it’s what translates the host names you type into a URL tab-like -into IP addresses, which is where those sites live.ĭNS mishaps are common enough, and when in doubt, they're the reason why a given site has gone down. The company’s family of apps effectively fell off the face of the internet at 11:40 am ET, according to when its Domain Name System records became unreachable. It’s a social media blackout that can most charitably be described as “thorough” and seems likely to prove particularly tough to fix.įacebook itself has not confirmed the root cause of its woes, but clues abound on the internet.
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If that failed, it could be in for “a world of hurt” - because it would need to order manual changes at outside data centers, he added.A Facebook, Instagram, WhatsApp, and Oculus outage knocked every corner of Mark Zuckerberg’s empire offline on Monday. Colombia University computer scientist Steven Bellovin tweeted that he expected Facebook would first try an automated recovery in such a case. “No one else announced these routes,” said Madory.Ī massive denial-of-service attack that could overwhelm one of the world's most popular sites would require either coordination among powerful criminal groups or a very innovative technique, security experts said.Ĭomputer scientists speculated that a bug introduced by a configuration change in Facebook’s routing management system could be to blame. Madory said there was no sign that anyone but Facebook was responsible and discounted the possibility that another major internet player, such as a telecom company, might have inadvertently rewritten major routing tables that affect Facebook. Jake Williams, chief technical officer of the cybersecurity firm BreachQuest, said that while foul play cannot be completely ruled out, chances were 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, a key structure that determines where internet traffic needs to go. Malory said it appears that Facebook withdrew “authoritative DNS routes” that let the rest of the internet communicate with its properties.
“They’re more susceptible to social engineering because they’re so desperate to communicate.” Tobac said during previous outages, some people have received emails promising to restore their social media account by clicking on a malicious link that can expose their personal data.
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“They don’t know how to contact the people in their lives without it,” she said. 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.
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The stricken content delivery company in that case, Fastly, blamed it on a software but triggered by a customer who changed a setting. 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. “If your game isn't running as usual please note that there's been an issue with Facebook login servers and the moment this gets fixed all will be back to normal,” puzzle game app Match Masters said on its Twitter account. Several users using their Facebook credentials to log in to third-party apps such as Pokemon Go and Match Masters were also facing issues. Multiple employees said they had not been told what had gone wrong.įacebook has experienced similar widespread outages with its suite of apps this year in March and July. Facebook's response was made much more difficult because employees lost access to some of their own tools in the shutdown, people tracking the matter said. One Facebook employee told Reuters that all internal tools were down. "We’re working to get things back to normal as quickly as possible, and we apologise for any inconvenience," he said.
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