Recently, a nasty bug was reported in Safari that leaked your browser data. It sat out there in the wild for a bit, but Apple has released iOS 15.3 and iPadOS 15.3 to fix the leak and close that gaping security hole.
With the bug, websites could access a user's browser history and Google ID when they're not supposed to access that information. While it's not as bad as having your passwords stolen, it's still a fairly serious leak and one that we're glad to see Apple fix.
Apple's update notes simply say, "iOS 15.3 includes bug fixes and security updates for your iPhone and is recommended for all users." The company also links to its security updates page, but it doesn't include the information for iOS and iPadOS 15.3 yet.
However, 9To5Mac tested the prerelease software and found that it did fix the Safari bug, so we definitely recommend updating your devices as soon as possible to make sure that the security hole is closed.
Outside of the security fix, there doesn't seem to be any other significant changes to iOS and iPad with this update.
Additionally, Apple released macOS 12.2 with the same Safari security patch, so if you're a Mac user who uses Safari as your browser of choice, you'll want to make sure to update your computer. The Mac update also features improved ProMotion scrolling.
Finally, Apple released watchOS 8.4, which comes with bug fixes and performance improvements.
Make sure your iPhone, iPad, Mac, and Apple Watch are up to date to fix these security issues as soon as you can, as it's definitely worthwhile.