http://www.us-cert.gov/ncas/current-activity/2013/04/17/Scams-Exploiting-Boston-Marathon-Explosion

Malicious actors are exploiting the April 15 explosions at the Boston Marathon in attempts to collect money intended for charities and to spread malicious code. Fake websites and social networking accounts have been set up to take advantage of those interested in learning more details about the explosions or looking to contribute to fundraising efforts.