The Washington Post has an article about how hackers have started specifically attacking brokerage accounts to use in pump and dump schemes.

To protect yourself avoid accessing important accounts from public kiosks. Also anti-spyware has become the must have addition to your computer security suite (check out Adaware and Spybot if you don’t have one). I was recently notified by Fidelity that they had to shut down thousands of users accounts because hackers had
compromised many of their customers machines implanting a spyware program that would redirect surfing from to a copycat malicious site which would record the user’s username and password before handing them off to the real site.

Let’s be careful out there…