Is there a way to see current credentials as they are being used by the SAM component monitors. My first guess is no, but I figured I would ask.
I would guess yes, but that they won't give it to a non SW employee and only one of their developers would know how to do it. The engine has to use the password, so there must be a common decryption key the engine uses, but I bet that code is kept as secret/hidden as they can possible keep it.
The following reports in the Content Exchange should help you identify where your credentials are being used but as Steve B suggests accessing the encrypted credentials stored in the database is simply not possible. At least not directly. Steve B is correct, that even as the Product Manager they won't tell me how to decrypt credentials stored in the database.
Credentials Used By APM Component Monitors
APM Component Monitors Whose Credentials are not Inherited from the Original Template