Softpedia: Very Low Number of Malicious URLs Recorded on Twitter. Based on analysis by Zscaler. Not convinced it’s truly reflective, because I was severely sceptical of some of their research back in April. (http://blog.eset.com/2010/04/01/shortened-urls-dont-sweat-the-short-stuff.) Still, would be nice if it were true. Don’t suppose that would make the news, though.
Also, a couple of things turned up by F-Secure.
It’s never a good idea to underestimate the amount of damage Google can do. You might also be interested in stuff relating to the Java applet attack on Windows, OS X and Linux at http://www.macvirus.com: the main attack is, after all, social engineering.
David Harley CITP FBCS