When a site is hacked, it is often used to send spam. Other clients on the server pay for it: their emails land in junk or get refused. HT Guard counts what each account sends and shows us what isn't normal, so we can stop it fast.
A single account sending spam can get the server's address blacklisted. Meanwhile, invoices, quotes and messages from every other client stop arriving. Stopping it early protects everyone.
HT Guard is one system: each protection helps the others.
HT Guard is included with every Hi-Tech Hosting web hosting plan.