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Wagner received an A.B. in Mathematics from Princeton University in 1995, a M.S. in Computer Science from Berkeley in 1999, and a Ph.D. in Computer Science from Berkeley in 2000.

Notable achievements include:

• 1996 Discovered a flaw in the implementation of SSL in Netscape Navigator (with Ian Goldberg).
• 19971997 was a common year starting on Wednesday (see link for calendar), and was designated the International Year of the Reef''. Events January January 3 NBC's Today Show Bryant Gumbel signs off for the last time January 8 Mister Rogers receives a star on t Cryptanalyzed the CMEA algorithm used in many US cellphones (with Bruce SchneierBruce Schneier (born January 15, 1963) is an American cryptographer, computer security expert, and writer. He is the author of several books on computer security and cryptography, and is the founder and chief technology officer of Counterpane Internet Sec).
• 19981998 was a common year starting on Thursday (see link for calendar), and was designated the International Year of the Ocean''. Events January January 1998 A massive ice storm, caused by El Nino, strikes New England, southern Ontario and Quebec, resulting Development of Twofish block cipherIn cryptography, a block cipher is a type of symmetric key cipher which operates on groups of bits of a fixed length, termed blocks''. This is in contrast to stream ciphers which encrypt each bit of the plaintext individually before moving on to the next. as a submission for NIST's AES competition (with Bruce Schneier, John Kelsey , Doug Whiting , Chris Hall , and Niels Ferguson).
• 1999 Invention of the slide attack , a new form of cryptanalysis (with Alex Biryukov ); also the boomerang attack .
• 1999 Cryptanalysis of Microsoft's PPTP tunnelling protocol (with Bruce Schneier and " Mudge ").
• 2000 Cryptanalysis of the A5/1 stream cipher used in GSM cellphones (with Alex Biryukov and Adi Shamir).
• 2001 Cryptanalysis of WEP, the security protocol used in 802.11 " WiFi" networks (with Nikita Borisov and Ian Goldberg).