Try Protectumus: https://protectumus.com

Protectumus monitors the website uptime, speed, dns changes, scans the website for malware like a traditional antivirus, blocks bad bots, custom IP's and countries. Protectumos acts as a Firewall. We are the only security company specialized in SEO Security, we offer unique SEO services such as Search engines Cloaking monitoring, Google DMCA Complaints, Blacklist monitoring & removal and more.

Details here - https://news.ycombinator.com/item?id=18295381

Full disclosure: I'm the founder.