Here’s what caused yesterday’s O2 and SoftBank outages – TechCrunch

Here’s what caused yesterday’s O2 and SoftBank outages – TechCrunch

It appears that most mobile carriers, including O2 and SoftBank, have recovered from yesterday’s cell phone network outage that was triggered by a shutdown of Ericsson equipment running on their networks. That shut down appears to have been triggered by expired software certificates on the equipment itself. While Ericsson acknowledged in their press release yesterday that expired certificates were at the root of the problem, you may be wondering why this would cause a a shutdown. It turns out that it’s

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