Note the full tweet (that comes without any further info, so is this even worth discussing right now?) says: > A 2nd major crypto vulnerability being disclosed

Note the full tweet (that comes without any further info, so is this even worth discussing right now?) says: > A 2nd major crypto vulnerability being disclosed Monday involves millions of 1024- and 2048-bit RSA keys that are practically factorizable. This doesn't mean all 1024- and 2048-bit RSA keys are vulnerable, just that there is some collection of millions of them that are (e.g. due to bad randomness re-using a lot of prime factors, see for example [1]). 1: https://eprint.iacr.org/2016/515.pdf https://eprint.iacr.org/2016/515.pdf