NSA suspected in Juniper Networks backdoor

blogspam for https://community.rapid7.com/community/infosec/blog/2015/12/..., already discussed here: https://news.ycombinator.com/item?id=10768720

and http://www.wired.com/2015/12/juniper-networks-hidden-backdoo..., see https://news.ycombinator.com/item?id=10762929