It's easy to avoid Shlayer malware...

[DelJo63]

It's easy to avoid Shlayer and most other Mac (and Windows) malware - never click on an Adobe Flash updater pop-up notification.


From Lifehacker:

There’s no reason to install, update, or use Flash Player to access online content in 2020, save for very rare exceptions—and no, none of those exceptions include watching illegal streams of sporting events or leaked movies. If you need to download Flash, get it directly from Adobe. Nowhere else.