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. “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. 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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