I had a company that went out of business. I am still using the credit card issued in that company's name. Am I doing anything wrong?

This is not some sort of purposeful financial initiative, it's simply laziness. And the card still has a balance. As long as I pay my bills and act financially responsible with the card as I slowly pay it off, am I exposed in any way, not necessarily illegality, but maybe a simple financial "gotcha" I do not foresee?