whistle blowing is an act by an employee to inform higher management or the public about unethical or illegal behavior of an employer or supervisor (which also included product which is unsafe like what you want us to discuss). It divide into 3 which are internal, external and also anonymous/acknowledge.

How do you know when you should do whistle blowing?
- when you should (morally permissible) when
need: a clear important harm can be avoided
proximity: in a clear position to report the problem
probability: higher chance of success
last resort: no one can do it other than you

- when you must (morally obligatory)
four point in morally permissible are met
and the problem give imminent danger to a person if it continue

in corporate point of view, whistle blowing is undesirable because it can create distrust, disharmony, lead to inability to work in team and also threat of violence