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Len Sassaman

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Cause of death
  
Occupation
  
Researcher, COSIC


Name
  
Len Sassaman

Residence
  
Len Sassaman httpsuploadwikimediaorgwikipediacommonsthu

Born
  
1980 (
1980
)

Known for
  
Mixmaster, X.509 attacks

Died
  
July 3, 2011, Leuven, Belgium

Spouse
  
Meredith L. Patterson (m. 2006)

Education
  
Katholieke Universiteit Leuven

Len sassaman meredith patterson are codecon valentines


Leonard Harris Sassaman (1980 – July 3, 2011) was an advocate for privacy, and the maintainer of the Mixmaster anonymous remailer code and operator of the randseed remailer.

Contents

Len Sassaman Len Sassaman Wikipedia

DEF CON 11 - Len Sassaman & Panel - Behind the Remailers


Early life and education

Sassaman graduated from The Hill School in 1998.

Career

Sassaman was employed as the security architect and senior systems engineer for Anonymizer. He was a PhD candidate at the Katholieke Universiteit Leuven in Belgium, as a researcher with the Computer Security and Industrial Cryptography (COSIC) research group, led by Bart Preneel. David Chaum and Bart Preneel were his advisors.

Sassaman was a well-known cypherpunk, cryptographer and privacy advocate. He worked for Network Associates on the PGP encryption software, was a member of the Shmoo Group, a contributor to the OpenPGP IETF working group, the GNU Privacy Guard project, and frequently appeared at technology conferences like DEF CON. Sassaman was the co-founder of CodeCon along with Bram Cohen, co-founder of the HotPETS workshop (with Roger Dingledine of Tor and Thomas Heydt-Benjamin), co-author of the Zimmermann–Sassaman key-signing protocol, and at the age of 21, was an organizer of the protests following the arrest of Russian programmer Dmitry Sklyarov.

On February 11, 2006, at the fifth CodeCon, Sassaman proposed to returning speaker and noted computer scientist Meredith L. Patterson during the Q&A after her presentation, and they were married. The couple worked together on several research collaborations, including a critique of privacy flaws in the OLPC Bitfrost security platform, and a proposal of formal methods of analysis of computer insecurity in February 2011.

Meredith Patterson's current startup, Osogato, aims to commercialize Patterson's Support Vector Machine-based "query by example" research. Sassaman and Patterson announced Osogato's first product, a downloadable music recommendation tool, at SuperHappyDevHouse 21 in San Francisco.

In 2009, Dan Kaminsky presented joint work with Sassaman and Patterson at Black Hat in Las Vegas, showing multiple methods for attacking the X.509 certificate authority infrastructure. Using these techniques, the team demonstrated how an attacker could obtain a certificate that clients would treat as valid for domains the attacker did not control.

Death

Sassaman is reported to have died on July 3, 2011. Patterson reported that her husband's death was a suicide.

A presentation given by Kaminsky at the 2011 Black Hat Briefings revealed that a testimonial in honor of Sassaman had been permanently embedded into Bitcoin's block chain.

References

Len Sassaman Wikipedia