The cyberattacks on Sony Pictures in response to a movie that depicts a plot to kill North Korean leader Kim Jong-un should serve as a wake-up call in the digital age for companies that have hitherto been lax on information security. “That is the major takeaway for companies who are watching this train wreck and breathing a sigh of relief that it wasn’t them,” according to Andrea Matwyshyn, a law professor at Princeton University. The hacking has been a “public relations nightmare,” for Sony, adds Wharton marketing professor Pinar Yildirim , as leaks of internal communications have fractured relationships and cast major Hollywood players in an unflattering light. The two experts discussed the likely fallout on the Knowledge at Wharton show on Wharton Business Radio on SiriusXM channel 111 . (Listen to the podcast at the top of this page.) Sony’s latest troubles began as it prepared for a Christmas release of The Interview , a satirical comedy about the attempted assassination of the North Korean leader.…