Apple just released a new security update for all users who have macOS High Sierra 10.13.4 installed, and this update fixes bugs and improves system security. In this case the numbering is 2018-001 and is available to everyone.
To install this new version, all we have to do is access the Mac App Store and click on the updates tab, in it we see this new version available. Once downloaded and installed we will have to restart the computer, so finishing the tasks before updating is important.
Security update
This security update is released a month after the final version of macOS High Sierra 10.13.4 arrived, but we do not seem to have any notable flaws in this version. In Apple they already warn that do not reveal the problem solved in security updates:
In order to protect our customers, Apple will not disclose, discuss, or confirm security issues until an investigation has been conducted and the necessary revisions or versions are available. Recent versions are listed in this document.
In any case, the company launches the new version due to a bug and what users have to do is install it as soon as possible to correct the problem. Whenever a security update is released it is important to update.