| We at NetToolKit have been working on related problems for years and might have two products that directly address what you are looking for. We launched Shibboleth (a CAPTCHA service) about a year ago, and you can select from a variety of different CAPTCHA types (including some non-traditional types; different types have different strengths and fun factors): https://www.nettoolkit.com/shibboleth/demo There are a variety of options that you can set, and you can also review user attempts to solve CAPTCHAs to see if you want to make the settings more or less difficult. Recently, we launched Gatekeeper ( https://www.nettoolkit.com/gatekeeper/about ) which competes against Distil and others, but without fingerprinting. Instead, site operators can configure custom rules and draw on IP intelligence (e.g. this visit is coming from Amazon AWS or this IP address has ignored ten CAPTCHAs in two minutes), and Gatekeeper will indicate to your website how it should respond to a request based on your rules. There's also other functionality built in, such as server-side analytics. Some light technical integration is required, but we're happy to help with that if need be. As with all NetToolKit services, we have priced both of these services very economically ($10 for 100,000 credits, each visit or CAPTCHA display using one credit). We would very much appreciate a conversation, even if it is only for you to tell us why you think our solutions don't fit what you are looking for. I would be happy to talk to you over the phone if you send me your phone number via our contact form: https://www.nettoolkit.com/contact |
Do you have an email (ideally one that doesn't pipe into a ticket system)? Maybe I can share some possible/creative attacks we've seen that you can improve your service with, even if it's out of budget for us.
As a comparison note, Stackpath does 1mil requests for $10/m.