Simon Willison’s Weblog

Popular Websites Vulnerable to Cross-Site Request Forgery Attacks. Ed Felten and Bill Zeller announce four CSRF holes, in ING Direct, YouTube, MetaFilter and the New York Times. The ING Direct hole allowed transfer of funds out of a user’s bank accounts! The first three were fixed before publication; the New York Times hole still exists (despite being reported a year ago), and allows you to silently steal e-mail addresses by CSRFing the “E-mail this” feature.