No. It is purely a partition corruption issue caused by a flawed update script. Garmin has confirmed no security breach.
Before the these issues, users of high-end Garmin units (including Fenix and Forerunner models) reported several frustrating problems, particularly during outdoor activities: garmin 4nsf update fixed
Issues related to syncing failures have been smoothed out. The update ensures that your workouts, steps, and location data transfer flawlessly between your hardware and the mobile application. Step-by-Step Guide: How to Apply the Garmin Fix Before the these issues, users of high-end Garmin
By mid-September, the issue had escalated. Users discovered that the error was triggered specifically by interacting with older BlueChart g2 or g3 Vision cards. Garmin pulled the update temporarily, but for many, the damage was already done. Users discovered that the error was triggered specifically
If the reset works, you must immediately prevent the error from recurring. The original error occurred because a file became corrupt during the update process. Simply resetting the device may allow it to boot, but the corrupt data may still be present, causing crashes later.