Yan is a security engineer at Yahoo, mostly working on End-to-End email encryption and improving TLS usage. She is also a Technology Fellow at EFF and a core developer of Let's Encrypt, HTTPS Everywhere, Privacy Badger Firefox, and SecureDrop. Yan has held a variety of jobs in the past, ranging from hacking web apps to composing modern orchestra music. She got a B.S. from MIT in 2012 and is a proud PhD dropout from Stanford.

Yan has been a speaker at HOPE, DEFCON 22, jQuerySF, Real World Crypto, SXSW, and various other human gatherings. She is @bcrypt on Twitter.