New E-Mail Vulnerability - Trust Your Neighbor?

Anonymous Coward writes: "According to this article in The New York Times (free registration required), a trick enables someone to essentially bug an e-mail message so that the spy would be privy to any comments that a recipient might add as the message is forwarded to others or sent back and forth. The vulnerability could facilitate the harvesting of e-mail addresses. Widely used e-mail programs that are vulnerable to the exploit (because they enable JavaScript) include Microsoft Outlook, Outlook Express and Netscape 6." A snippet from the article: "The potential for such e-mail spying was first discovered by Carl Voth, an engineer in British Columbia. 'What bothers me is that in this case, my vulnerability is a function of what you do,' Mr. Voth said. 'I can be careful, I can take every precaution, I can turn off JavaScript, and it doesn't matter. If my neighbor isn't diligent and I send him an e-mail, I'm still vulnerable.'" "The Privacy Foundation, an educational and research organization based in Denver, plans to publicize and demonstrate the technique today."