Kasada is a bot-mitigation platform that focuses heavily on client-side interrogation, inspecting requests for evidence of automation and looking specifically for headless browsers and automation frameworks such as Puppeteer and Playwright. Kasada lists retail, travel, and airlines among the industries it serves, where bot traffic carries direct revenue impact.

Kasada's challenges are designed to be expensive to solve at scale, deliberately consuming compute time from whatever is trying to pass them, which raises the cost of large-scale automated access even when a bypass technically exists.

Kasada positions itself as a CAPTCHA alternative: legitimate users aren't shown challenges, while automated clients face defenses designed to be expensive to defeat. Its client-side code runs in what Kasada calls a polymorphic virtual machine that keeps changing how it presents itself, so attackers who work out how it behaves have to start again once it changes. It also uses an asymmetric proof-of-work challenge, which makes large-scale attacks computationally costly.