Kasada is a SaaS solution that uses a zero-trust philosophy to detect and stop malicious automation before it enters a user's infrastructure. It identifies immutable evidence of automation tools interacting with online businesses and is resilient to retooling and reverse engineering attempts. The solution can be deployed in less than 30 minutes, requires almost no maintenance, and eliminates the need for rule updates, risk scoring, and CAPTCHAs. Kasada uses client interrogation, client sensors, telemetry, inferencing, mitigative actions, cryptographic challenge, threat intelligence, and dynamic script injection to accurately determine if a client request is from a human, good bot, or bad bot and to make bot attacks too expensive to conduct at-scale.