Analyze messages with errors

Finding and calling analyzed error messages allows you to identify the running services and technologies used by applications. In calling errors, it is most effective to manually modify HTTP queries by randomly inserting unusual characters into different parts of the http query. In one of the applications tested, the sample error message shown in the figure below reveals information about the structure and absolute location of the files on the server.

Figure. An error message that reveals sensitive information. Source: [Own study]