J.C. Penney Fights Twitter Attacks

The attacks are a reminder of social media's power to undermine the reputation and shares of a public company. J.C. Penney, struggling to turn itself around after the failed strategy of former CEO Ron Johnson, is especially vulnerable to market sentiment. "J.C. Penney's is a very specific situation," said Liz Dunn, an analyst at Macquarie Group in New York. "I wouldn't expect this to be a rampant problem of anonymous Twitter users bashing companies."