I like the unified security approach Imunify has for hosting and shared servers. Their tools help systems administrators quickly discover compromised code and accounts to secure servers from bad actors. Review collected by and hosted on G2.com.

The pricing structure can get steep for "360" security if you have a large cluster of servers. However, the cost of the basic scanner is reasonable and can help mitigate well-known attacks. I wish the bulk discount were more significant so that more people would use this software to secure their servers. Review collected by and hosted on G2.com.