I Built a Medical SaaS With AI. Then I Got Hacked. Here's the Case Study.

Thu, 23 Apr 2026 00:00:00 +0000

The first night I deployed my sister’s medical scheduling system to production, I went to bed feeling like a king. By 9am the next morning, my server’s CPU was pinned at 300%, and someone else was mining cryptocurrency on my rented hardware.

That’s the middle of the story, though. Let me back up.

This is a case study about the SaaS I always wanted to build, the one that finally found me, and everything I broke and learned getting it to work. It’s also the story of a Product Designer who thought he understood software, and discovered the internet is a much stranger, more hostile place than any Figma file ever suggested.

Case Study on Fernando Ruiz

I Built a Medical SaaS With AI. Then I Got Hacked. Here's the Case Study.