I worked for NBB as an Android Engineer about 5 years ago. While refactoring the analytics / tracking services (5 different providers in the app), I noticed tha

I worked for NBB as an Android Engineer about 5 years ago. While refactoring the analytics / tracking services (5 different providers in the app), I noticed that customers credit card data was leaking to analytics providers. I informed my PO about this, but he decided that this wouldn't be worth the effort fixing. I left the next day.