This tweet warns that Web Application Firewalls (WAFs), such as those provided by Cloudflare, can be bypassed. It emphasizes that relying solely on a WAF for protection against zero-day vulnerabilities is risky. Zero-day vulnerabilities are security flaws that are not yet known or patched. Since WAFs might not recognize or block new types of attacks exploiting zero-day vulnerabilities, they should not be the only defense mechanism. Developers and security teams should implement multiple layers of security beyond just using a WAF to protect their applications effectively.
Check out the original tweet here: https://twitter.com/BoomerangBs/status/2052492521616421108