Is there a Security Protocol?

Good Day,

The WP installations I administrate have been subject to numerous hacking attempts (successful or not) and I was wondering if there is a “Reinforce Security” protocol or similar. It is ~ok to use 30 characters long passwords but it possibly isn’t enough with an md5 encoding and SQL injections or whatever other techniques the attackers may use.

The host provider assure its protections are “un-breakable”, the results have demonstrate otherwise :/ – Furthermore, their technical staff is not very helpful.

There is a CPanel with Softaculous install and it provides some measures but I am not too confident in their scripts.

Anyone got something “Rock Solid” procedure or something beside the obvious and the advices of “WP Specialists” on YouTube?

Thank you ??