Should I keep my knowledge of someone else's traumatic experience a secret when people ask questions ?

Unless that someone else tells you otherwise, it's best to not reveal information on their traumatic experience. If someone asks if something's going on with them, you can say "They're going through some tough times right now, but I'm not them and I don't want to speak for them or give information that they don't want shared."

If you were asked to keep secrecy then you should do so. However, if you know for a fact or fear that someone is in a position to hurt themselves or others you should try to confide that to somebody that can get them the help they need! But if someone is just confiding a secret in you in order to have someone to turn to and to talk to, then you should honor that and keep it as that. A secret.

Yes, absolutely. If you were told this information, you should assume it was told to you in confidence, and that if anybody needs to tell people about this, it should be the person who this happened to. The only time I would think that you could tell people is if you think the original person is at risk of harming themself because of the incident. In that case, I think the person's well being is more important than the confidentiality of the issue.

Unless it is a life threatening situation you have no business sharing knowledge about someone else.

If it's your friends, then, of course, it should, and if it's someone else's, it's up to you, I read the article https://oceanessay.com/pay-for-essay/ on a similar topic, the author of this article believes that this should not be done.

Yes, definitely. Unless you believe that person is in risk, and you are unable to asist that person along, It's best to uphold the trust and privacy that person entrusted you with. It must have not been easy for that person to share his knowledge of his experiences with you, and would not like to know, mostly, if you are talking to other people about it without his permission. That person is entitled to secrecy, and so are you. If you feel uncomfortable and troubled about it, you should either talk to the person themselves. Now, you must share the knowledge, if you feel that person is at risk, with the appropriate companies.