The 2017 iteration of the Samsung Galaxy A3 is getting its very first security update. The patch, which started rolling out over-the-air in Europe, appears to contain all the security measures from the May update, bringing the software version of the device to A320FLXXU1AQE1.
As usual, the changelog doesn't specify which vulnerabilities were exactly addressed for security reasons, but we know that a total of 65 Common Vulnerabilities and Exposures (CVEs) related to the Galaxy phone and its Android system have been resolved.
Unfortunately, the A3 models don't get updated quite as often as the Galaxy S flagships (or the A5 for that matter), but any support from Samsung is better than none at all. Apart from the security patch, the update also contains optimizations to the performance and stability of the device.
When you get a notification for the software upgrade on your handset, make sure that your phone is sufficiently charged and connected to a Wi-Fi network before proceeding. If you haven't received one already, you can check for the update manually by heading to Settings > About Device > Software Updates.