NOT TRUE - they want your bank account to steal your money ONLY
no one from the government is giving away money to those who never applied for a grant

Government Grant Scams
Although government grant scams have been around almost as long as the government itself, the majority of the sites being advertised today didn't exist before the November 2008 election.

http://www.consumeraffairs.com/news04/2009/03/grant_scam_ads.html
http://www.consumeraffairs.com/scam_alerts/grant.html
http://www.consumeraffairs.com/news04/2009/03/ftc_stimulus_scam.html

FEDERAL TRADE COMMISSION WEBSITE      
http://www.ftc.gov/bcp/edu/pubs/consumer/alerts/alt134.shtm

‘Free Government Grants’: Don’t Take Them For Grant-ed