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I just witnessed a question from someone on Stack Overflow that, for some unknown reason, posted what appeared to be an array containing usernames, encrypted passwords, email addresses, phone numbers, IP addresses, etc., asking for help handling the array. Fortunately, the author removed the question, but not before dozens or hundreds of users saw this question and perhaps got indexed by search engines.
Besides flagging this question, are there any steps for Stack Exchange users to pursue in such a situation? If I were a client of this person, I'd want someone to tell me that they are incompetent and leaked some of my information.
Edit: Thanks for the responses. While I viewed the duplicate question, I feel these answers and comments are more appropriate, especially given the website changes over the past year. It was more a question of what can I do than what should I do. The answers and comments here also gave me some insight over attitudes of this kind of situation in an ethical and legal light.