The best fraud detection service I've been using IPQS for nearly 2 years now and I'm confident to say that it's the best fraud protection/invalid traffic filter out there. I run a few websites and I monetize their content using display banners, mainly from Google Ad demand. Anybody that works as a publisher for Google Adsense/Google AdExchange knows how sensitive Google is when it comes to invalid traffic, and it's ultimately our job to make sure our traffic is clean and legitimate. That's why I use IPQUALITYSCORE services to filter out bots, proxies, and VPNs from my websites. Just include a simple JS tag or PHP file and you are all set. I've tested similar services, but IPQS was the one with the most accurate detection and fewer false positives. I really recommend them.

The best VPN/proxy detection and device… The best VPN/proxy detection and device fingerprint service in the world by far. Not only are their prices the best, but support is the best I've ever dealt with. Been using for 5 years and here's to another 50!

Ruins legitimate website traffic Their VPN/proxy detection data service is very draconian and leads to many false positives that ultimately degrade the service experience of many clients I have worked with, who have had their users' residential and cellular IP addresses falsely assigned a high fraud risk. I myself have had several instances where I have been blocked by sites using data from IPQS despite using low risk corporate or residential IPs, needless to say causing endless headache. I would not recommend using this company for proxy detection unless you are looking to alienate legitimate website visitors. Additionally, they are not very receptive to requests to unblock IP addresses and seemingly have an arbitrary and secretive process by which they assign fraud scores.

Seems like a nice service, after all There were some initial problems creating an account, but they kindly helped me, and I'm currently reviewing the service's features before deciding on the paid plans. For now it seems like a great deal.

Good so far! Been using for months now, great service and support very responsive. Just a shame their non-free plans are such a big jump up from the free ones.