hypnosec writes "Cyber-scammers have started using '1.usa.gov' links in their spam campaigns in a bid to fool gullible users into thinking that the links they see on a website or have received in their mail or newsletter are legitimate U.S. Government websites. Spammers have created these shortened URLs through a loophole in the URL shortening service provided by bit.ly. USA.gov and bit.ly have collaborated, enabling anyone to shorten a .gov or .mil URL into a 'trustworthy' 1.usa.gov URL. Further, according to an explanation provided by HowTo.gov, creating these usa.gov short URLs does not require a login."
Which might not be a big deal, except that the service lets through URLs with embedded redirects, and it is to these redirected addresses that scammers are luring their victims.