Apple has issued a whole bunch of security updates. iOS 12.2 adds support for News+ and corrects problems with cryptography, memory handling, Contacts, FaceTime, etc.
macOS Mojave 10.14.4 corrects problems with graphics, Gatekeeper, memory, cryptography, FaceTime, etc.
tvOS 12.2 corrects problems with cryptography, memory management, etc.
Safari 12.1 (available for Sierra, High Sierra and Mojave) corrects several problems with WebKit.
iTunes 12.9.4 for Windows and iCloud for Windows 7.11 correct a variety of issues for Windows users.