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Facebook’s outage early on Tuesday, which also took out linked services such as Instagram and Tinder, was down to a technical issue caused by the company itself rather than external factors.

The outage affected users around the world. According to a technical note, the outage lasted an hour — individuals may have experienced it for up to 50 minutes, sources told me.

The Lizard Squad hacking group, which apparently successfully hijacked the website of Malaysia Airlines on the weekend, claimed responsibility for Facebook’s downtime in a tweet. However, according to the company itself, that’s nonsense.

It said in a statement:

Earlier this evening many people had trouble accessing Facebook and Instagram. This was not the result of a third party attack but instead occurred after we introduced a change that affected our configuration systems. We moved quickly to fix the problem, and both services are back to 100 percent for everyone.

No data was compromised, the sources added.