I received a bug bounty from Mozilla after leaving, in a browser component I previously worked on. I didn't write the vulnerable code though. On the other hand

I received a bug bounty from Mozilla after leaving, in a browser component I previously worked on. I didn't write the vulnerable code though. On the other hand, Google refused to pay me a bug bounty for a bug I found in the same component, in part because I used to work on it when I was at Mozilla, even though I didn't write the vulnerable code.