It's primarily a "quality" improvement update and as such, unless you click on the "check for updates" button, it won't be released to most users. It was released about a week ago and I'm guessing the "fixes" in this update will be included in the July 2019 "patch Tuesday" cumulative update when it's released in about a week. Read the Microsoft article about it below:

https://support.microsoft.com/en-us/help/4501375/windows-10-update-kb4501375

The Spyware, Viruses, & Security is at the link below:

https://www.cnet.com/forums/spyware-viruses-security/

Hope this helps.

Grif