Internet outage: Websites for major airlines, banks go down overnight

The websites for multiple companies, including major airlines such as Southwest, Delta, American and United, appeared to go down or experience problems shortly after midnight Thursday. Meanwhile, websites for E-Trade, ADP, Navy Federal Credit Union, Discover and Vanguard also were having issues, DownDetector reported.

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Several of the affected websites appeared to be working again within an hour, according to Bloomberg.

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