New $5 Bills to Foil Counterfeiters, Starting Today

Ever try going into the supermarket with gold or silver to buy a loaf of bread? Let me know how that works out for you!

I just though it was so nice of them to tell the counterfeiters what to look for and where to find it.

The counterfeiters (or anyone who looks carefully) are already well aware of these security features whether or not the details are published. Since these measures are so difficult to defeat, publishing details about them should actually decrease the incidence of attempted counterfeiting. These days successful counterfeiting requires teams of people running very expensive high-tech equipment. The mom-and-pop scale operations of the past don't pose much of a threat anymore. Now the U.S. mainly need to worry about counterfeiting by rival governments.

Now the U.S. mainly need to worry about counterfeiting by rival governments.

Yes, indeed. Namely, Iran and North Korea.