Small business sites do not get attacked because they are interesting. They get attacked because they are findable and usually neglected. The vast majority of incidents I clean up come down to three things: an outdated plugin, a reused password, and nobody watching.
I close those three doors. Application firewall, login attempt blocking, two-factor authentication on admin accounts, updates applied and tested, and an alert that fires when a file changes for no reason.
And because the best security eventually gives way, all of it is backed by verified backups. Being able to restore in twenty minutes beats hoping you never have to.
What people usually ask
My site was already hacked. Can you recover it?
Yes. I clean it, bring it back online, then close the way in so it does not happen again.
Will this slow my site down?
No. The firewall runs at the server level, not in a plugin that weighs down every page load.