"About a month ago I was chatting on skype to a colleague about a payload for one of our clients,” he wrote. “Completely by accident, my payload executed in my colleagues skype client."<p>If I had to guess, they were probably pasting back and forth JavaScript "payloads" for an XSS and broke the parser that Skype is using for formatting chat messages. Not that interesting.<p>Chat messages on Skype aren't exactly the most effective propogation mechanism either. Don't you have to be approved as someone's friend before they can send you a message? This probably won't be used in any massive attacks any time soon. Until then, continue to annoy your girlfriends as the author apparently did.