It’s unclear how to know whether your device has been affected by a bad app, but developers are taking steps to clean up their software. WeChat announced that only a specific version of its app was breached by malware, so users who upgrade to the current version in the App Store won’t be affected.
Make sure to upgrade all of your apps to the most current version available, and look out for any strange permission requests. When in doubt, don’t enter any of your personal information, and reach out to a developer if you have questions about an app’s security.
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