[mmsc]

Juniper had a backdoor in their firmware in 2015 which gave ssh access, inserted by hackers: https://blog.cryptographyengineering.com/2015/12/22/on-junip...

There were some updates: https://www.zdnet.com/article/congress-asks-juniper-for-the-... and according to https://www.reuters.com/article/world/spy-agency-ducks-quest... China was behind it (but without evidence).