In order to do business with the Federal government you must be registered under their SAM system. There is no charge for registering. This week I got an email that looked like it was official and it said my registration was expiring. My registration does not expire until March 2018. At first, I thought it was legitimate but when I went a little further, it gave the option of signing up for 1 year, 3 years or 5 years and of course it asked for personal information and money. This is when I realized that this was a scam and when I checked on the internet, other people have been scammed by this. Of course, they want your credit card and personal information.
If you do business with the federal government, please be aware of this scam.