Yahoo! has become one of the biggest facilitators of phishing scams, claims an anti-spam group, and the web giant is doing little to stop it:

Yahoo! is hosting thousands of fraudulent websites that have domain names containing the words "bank", "PayPal" or "eBay", according to a leading anti-spam group Spamhaus.

Spamhaus claims Yahoo! is hosting almost 5,000 domain names using these words, many of which are linked to phishing scams. [...]

Spamhaus had written to Yahoo! about a number of cases, but received no replies.

According to Spamhaus, both AOL and Microsoft frequently scan their networks for fraudulent domain names and remove offending websites from their systems.

A representative for Yahoo! says that the Spamhaus report is the first the company has heard of fraudulent use of its network by phishers.

[Silicon.com] The Spam Report: Yahoo! accused of hosting thousands of phishing sites (via LJ Tech Blog)