I cannot stress this enough, DO NOT trust the bank account details received via emails, messenging etc. These can and regularly get hacked, with the hacker sitting in the background waiting for that email so they can change it to their own account. I personally know of two people losing around $50k each from this happening
At work, we're also getting request to update bank account details etc, only about 20% are legitimate requests.
ALWAYS pick up the phone and confirm the bank account details with the person. Don't rely on the phone number on the emails either, look up the phone number from another source (ie website).
Now read this all again, as it's a lot at stake.