Videos
MACS-produced material
Universally Composable Security: A Tutorial
Courses
Computer Network Security, 24 lectures
Secure Computation and Storage, 12 lectures (course homepage, video playlist)
Seminars
Sharing Knowledge without Sharing Data
Universal Composability Analysis of OpenStack
The Mathematics of Lattices II
How to Use Bitcoin to Enhance Secure Computation
Two Round MPC via Multi-Key FHE
Homomorphic Commitments & Signatures
Attribute-Based Encryption for Circuits
Time-Lock Puzzles from Randomized Encodings
2014 GHC Wednesday Keynote and Opening
(Start watching around the 49 minute mark.)