As a user of the community, it is your responsibility to ensure the content you post does not contain sensitive and/or confidential information. The following is partial list of what you need to be careful about posting
Any personally identifiable information
Installed applications and login credentials
Network diagram from networks in production environments
Also take care to not publicly post sensitive and/or confidential and restricted content. Any content that you post in the community is public and can be viewed by other members of the community.