Heya!

Thankfully JetProtect isn't the only plugin that protects against this threat of the box. The Simple Security Firewall ( https://wordpress.org/plugins/wp-simple-firewall/ ) has had the option to apply login protection to XML-RPC for a couple of years.

We also recently added the option to fully disable XML-RPC if you want.

Lots of options out there for protecting your XML-RPC!
Cheers!