Is it okay to block competitors’ emails if client didn’t request it?

Agree 100% with this response. Discuss internally the findings and how to approach client about it. IF and only if there was foul play by a manager - they will be looking to scapegoat and fire someone to save face with the client. Telling the client directly the findings without discussing internally first is all about your own ego and morals. The shutting thing about that is that - even though you may have done right by your client. You just made your employer look like a bunch of amoral a-holes. There’s no company that wants an employee who will throw them under the bus in front of a client. That’s how companies get sued. OP you would be seen as a liability to your employer for ratting out your own company. Which is probably why they let you go. Morally correct or not - when you work for a company you kind of owe them loyalty. Well you don’t have to do that - but they can also fire you or let you go if they think you will throw them under the bus. What should have been done is discuss internally. And approach client gently with management involved if it was that serious. From there - if management didn’t handle it in a way you moreally agree with. Then you discuss that with your manager and team and quit if you feel like your morals are so violated. In the future if anything like this happens again this approach would give you a much bigger advantage in your career. Your conworkers and boss will respect you more. And you also would be among a TEAM delivering this info to your client - not a lone wolf trying to look like a hero to the client.