This is a story about something that could have gone wrong on the internet this week but instead turned out mostly OK. How often can you say that? Around nine o\u2019clock on the East Coast on Friday, February 28, bad news arrived on the doorstep of Let\u2019s Encrypt. An arm of the nonprofit Internet Security Research Group, Let\u2019s Encrypt is a so-called certificate authority that lets websites implement encrypted connections at no cost.