Which logical fallacy is used in the text?
Dillon, the company you work for just filed for bankruptcy! How can I trust you with our money?

 - circular reasoning: an argument that supports a claim with the claim itself
 - guilt by association: a negative association intended to discredit someone or something
The text argues that Dillon must be fiscally irresponsible, because he works for a company that went bankrupt. However, even though his company is perceived as fiscally irresponsible, that doesn't necessarily mean that Dillon is, too. This illustrates a type of logical fallacy known as guilt by association.