Has your job had a lot of turnover?  If I guy walked into your place of business and said he was the "new boss" would you question him?  That's the scam that the guy in todays story pulled off.  Click through for the details.

Some places have so much turnover, I can see how you can walk in and just claim to be the manager.  I think you could do a lot of damage before someone figures you out.  Check out this story: