A tiny Facebook code change brought down several apps

These days, most major apps include code that comes from Facebook. That code allows users to log in to dozens of websites with an easy click by choosing to “Log in with Facebook.”

That small bit of code caused crashes to multiple iOS apps this month, including TikTok, Spotify, Pinterest, and Venmo.

Users found that when they tried to open the apps, even if they were not using Facebook to log in, the apps would crash.

Facebook issued a statement about the issue, “… a new release of Facebook included a change that triggered crashes in some apps using the Facebook iOS SDK for some users. We identified the issue quickly and resolved it.”

Some apps that don’t offer Log in with Facebook still use the SDK.

And lots of apps that don’t use Log in with Facebook still use the software development kit (SDK) for ad attribution, which is why the issue brought down so many apps.

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