Re: Off the leash
"No, that's not how it works. Developers with access to the systems use their own test data and are forbidden to view real data, while developers with access to user data are granted it on a strictly controlled test basis, just like any other telco engineer."
Depends on the specific company. Usually until there is some critical bug, and a bunch of data is replicated for debugging, or the developer does touch the production system.
Not all developers have access, and they might not have regular access to all the data, but plenty of data and access can be leaked, with very little tracing.