Lots of interesting questions have risen, not only regarding to end-user-data (Which we don't have, since we're an Agency), but also client-data from other companies (e.g. PMs, Owners).
One example (hypothetical):
One of our developers has the phone-number of a client's IT-specialist saved on their device, which has Whatsapp installed.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.