How do you prevent bots and spam?

We have multiple measures in place that help us prevent bots and spam:

1) CAPTCHA: We use a CAPTCHA on our screening forms to prevent bot submissions. A CAPTCHA is a program that protects websites against bots by generating and grading tests that humans can pass but current computer programs cannot.

2) Email duplicates: We use email address as the unique identifier to prevent multiple screening form entries from a single person. 

3) Campaign monitoring: Our Digital Marketing team performs weekly checks on each campaign. We take action if we notice any suspicious activity or a significant spike in lead volume.