Prior to this(or maybe Crypto 2007 where the suspicions were first aired), would you have have batted an eye if you saw Dual_EC_DRBG in a code base with some co

Prior to this(or maybe Crypto 2007 where the suspicions were first aired), would you have have batted an eye if you saw Dual_EC_DRBG in a code base with some configuration bit for which NIST RNG you used? Messing with the standard gets a backdoored RNG onto almost every system. Now NSA just has to convince companies to use it( and it's a NIST standard, so the company has some deniability) or surreptitiously swap it out. Microsoft's CNG api has a default random number generator. How hard would it be to detect if that default was switched to BCRYPT_RNG_DUAL_EC_ALGORITHM for say, all windows copies sent to Iran or China?