Yahoo, eBay try to block phishing / Scientific American, 4 October 2007
http://digbig.com/4trtc
"Yahoo Inc is working with auction leader eBay Inc and its PayPal payments unit to block fake e-mails to users purporting to be from eBay and PayPal, hoping to spur on an industry that has been slow to fight the scourge of so-called phishing attacks."