Twitter has quietly started filtering URLs in an effort to weed out links to known malware sites, reports The Wall Street Journal. Now, if you post a link to a fraudulent site, the following message appears:
"Oops! Your tweet contained a URL to a known malware site!"
ZDNet blogger Dancho Danchev says the move is a positive one, however, he calls the results "disappointing." Danchev notes that the filter does not seem to be using Stopbadware's database of known malicious sites, which he calls a missed opportunity. Another problem, according to Softpedia, is the filter's inability to verify links generated with popular URL shorteners.