[soupsranjan]

So this would be similar to Impermium (now acquired by Google) meets Sift Science meets Cloud Flare - have you checked them out?

I have thought of building such a security as a service for websites for sometime. My PhD thesis was on building a reverse proxy server (kind of like nginx) to detect attackers (via machine learning) and starve them of CPU/network resources disproportionately (using admission control + WFQ) during a DDoS attack. After that I've spent a decade building systems to detect cyber security threats, click fraud, Twitter spammers, etc.

What do you think is lacking in existing security as a service offerings that prompted your post? Would love to chat more.