Imagine this. Someone uses your website form to send thousands of spam emails. And you wake up to your email reputation being ruined and hundreds of “WTF happened” emails.

Is your code secure? Encryption, hashing, API security, SQL injections, CSRF, XSS, DOS, HSTS, RBAC, .... Oh my. When I started my programming journey, I didn't even know that I should care about software security.