NIST officially has removed the controversial and compromised Dual_EC_DRBG from its list of recommended algorithms for generating random numbers. The National Security Agency had exerted its influence on the development of the algorithm and intentionally weakened it to allow the agency to access communications protected by products that use it. NIST in April 2014 published a draft version of its updated recommendations about which RNGs should be used. Now, the final version of the document is out, and the weak RNG is officially off the NIST list.
Source: https://threatpost.com/nist-drops-weak-dual_ec-rng-from-official-recommendations/113493/