Assume everything you do online in the next few days, parts of it just will leak to random people. Passwords. Parts of notes. Random.
BTW the correct response to someone transitioning at work is "congratulations, thanks for trusting us, and can we take you out to celebrate"
I'm always shocked by how many people will go for performance in programming before correct.
If you're paranoid, clear data on all your apps on your phone. Anything that was done online while the server was leaky could have been seen