I think it makes a big difference whether this is private information you came across in the course of your employment, or public information that you learned of through the news, trade press etc. If the former you should consider informing your manager, HR or compliance department, or regulator, depending on the nature of the problem (you should have received training explaining who the appropriate people to bring different types of issues to are). If it is public events you can discuss them here, and my strong intuition is they do not provide strong reasons for you to resign if you otherwise wouldn’t.
I think it makes a big difference whether this is private information you came across in the course of your employment, or public information that you learned of through the news, trade press etc. If the former you should consider informing your manager, HR or compliance department, or regulator, depending on the nature of the problem (you should have received training explaining who the appropriate people to bring different types of issues to are). If it is public events you can discuss them here, and my strong intuition is they do not provide strong reasons for you to resign if you otherwise wouldn’t.