Israel CS Theory Day 2012: Robert Krauthgamer: Efficient Algorithms via Precision Sampling Michael Rabin: Secret, Incoercible and Deniable Bidding Countering Collusions in Auctions Ryan Williams: ACC Circuit Lower Bounds Yuval Ishai: The Complexity of Cryptography Niv Buchbinder: A Polylogarithmic-Competitive Algorithm for the k-Server Problem Ronen Shaltiel: Dispersers for Affine Sources with Sub-polynomial Entropy Yossi Azar: Fast Approximation Algorithms for Submodular Optimization Problems