PHILADELPHIA: Comcast customers in the Tucson, AZ, area were surprised during the fourth quarter of the Super Bowl when a short clip of pornography interrupted the game. The company's initial investigation suggests it was an "isolated malicious act," said Jenni Moyer, senior director of corporate communications for Comcast.

While the company investigates the situation, it was also in outreach mode all day Monday, encouraging customers to reach customer service via e-mail and telephone. The company responded on Twitter and ...