Saar Tochner

Leading Engineers and Researchers

Saar Tochner

About


I'm leading engineering and research projects in the last 10 years.

My work focuses on designing and implementing robust systems with an emphasis on privacy, security, and scalability. Through academic research and industry experience, I've developed expertise in cloud technologies, cryptocurrency systems, distributed computing, and generative AI.
During my postdoc at Carnegie Mellon University, I developed innovative systems combining generative AI with distributed tracing, pioneering new approaches to system observability through lossful compression techniques.
My expertise spans cloud architectures, distributed systems, neural networks, and implementing complex systems using technologies such as Serverless, Intel SGX, Ethereum, and various cryptographic tools. At Lumigo, I focused on building robust observability solutions for cloud applications.

I strive to bridge the gap between theoretical research and practical engineering solutions, particularly in the emerging intersection of AI and distributed systems.

Publications


  • Gen-T: Reduce Distributed Tracing Operational Costs Using Generative Models [pdf] (AGL @ NeurIPS 23')

    Authors: Saar Tochner*, Giulia Fanti, Vyas Sekar

    Abstract: Distributed tracing (DT) is an important aspect of modern microservice operations. It allows ▽ More

  • Blockchain Stretching & Squeezing: Manipulating Time For Your Best Interest [pdf] (ACM EC 22')

    Authors: Aviv Yaish*, Saar Tochner*, Aviv Zohar

    Abstract: We present a novel way for cryptocurrency miners to manipulate the effective interest-rate ▽ More

  • Twilight: A Differentially Private Payment Channel Network [pdf] (USENIX Security 22')

    Authors: Maya Dotan*, Saar Tochner*, Aviv Zohar, Yossi Gilad

    Abstract: Payment channel networks (PCNs) provide a faster and cheaper alternative to transactions ▽ More

  • SOK: Cryptocurrency Networking Context, State-of-the-Art, Challenges [pdf] (ACM Computing Surveys 21'; ARES 20')

    Authors: Maya Dotan, Yvonne-Anne Pignolet, Stefan Schmid, Saar Tochner, Aviv Zohar

    Abstract: Cryptocurrencies such as Bitcoin are realized using distributed systems and hence ▽ More

  • On Search Friction of Route Discovery in Offchain Networks [pdf] (IEEE Blockchains 20')

    Authors: Saar Tochner, Stefan Schmid

    Abstract: Offchain networks provide a promising solution to overcome the scalability challenges ▽ More

  • Proofs of Useless Work - Positive and Negative Results for Wasteless Mining Systems [pdf] (GAMES 20')

    Authors: Maya Dotan* Saar Tochner*,

    Abstract: Many blockchain systems today, including Bitcoin, rely on Proof of Work (PoW). Proof ▽ More

  • Hijacking Routes in Payment Channel Networks: A Predictability Tradeoff [pdf] (ACM AFT 20')

    Authors: Saar Tochner, Aviv Zohar, Stefan Schmid

    Abstract: Off-chain transaction networks can mitigate the scalability issues of today's trustless ▽ More

  • How to Pick Your Friends - A Game Theoretic Approach to P2P Overlay Construction [pdf] (ACM AFT 20')

    Authors: Saar Tochner, Aviv Zohar

    Abstract: A major limitation of open P2P networks is the lack of strong identities. This allows any ▽ More

Contact Me


Email: saar.tochner@gmail.com