Jonathan Haas

I'm Jonathan Haas, an application security engineer in San Francisco.

Previously, I was the VP of Engineering at Propy and co-founder of Bramah Systems.

I invest in seed and pre-seed stage startups via Haas Capital.

I attended UCF before moving to California to join Apple and then Snap.

Here are some other places you can find me:

• Writing
• Tweets
• Code

To learn more about me, you can read

• My manager README
• My audit of Binance's ERC 20 tokens
• My breakdown of smart contract audits
• Some of my research on SIM swapping