WordPress Spam Attack Fix

Our WordPress site, hosted on WP Engine with Cloudflare, is experiencing two issues caused by the same spam attack. The first issue is that lead forms are being filled with spam, and the second issue is that the site is being overwhelmed by spam traffic. We need a developer to identify the source of the attack, implement a solution to block spam submissions and traffic, and ensure the site remains secure and functional. Experience with WordPress, PHP, and Cloudflare is important for this project.