: Addressed the critical "KRACK" vulnerability, which could allow attackers to decrypt sensitive information transmitted over protected Wi-Fi networks. Bluetooth and Apple Pay
One of the most common complaints about the initial High Sierra release was stuttering UI animations, especially on older Retina MacBook Pros (Late 2013–2015). macOS High Sierra 10.13.1 directly addressed this. macos high sierra 10.13.1
If you are currently on 10.13.1, consider jumping to (the final High Sierra build) to get: : Addressed the critical "KRACK" vulnerability, which could