Enhanced methods are already available as part of a scheduled performance and security upgrade.
Attacks which exploited the earlier, weaker methods are not successful against the current NSS techniques. In particular, a web site stating such claims is outdated, and does not represent a successful or even a partial attack on the current NSS scheme. NSS is secure against all known attacks. Details are available in the technical note cited above and will be presented by Dr. Jeffrey Hoffstein, NTRU VP of Research, at the upcoming Eurocrypt cryptography conference. This year, two new independent papers again confirm both the underlying security of the NTRU and NSS algorithms and the quality of the independent researchers studying them.