The purpose of the t2 Challenge is to have an opportunity to win free tickets to the upcoming conference.

The rules are simple: the first one to solve the Challenge will win a free ticket to the t2 conference. In addition to this, the Advisory Board will select another winner from among the next ten correct answers. The criteria for the other selection is the elegance of the answer. In short, you can win with both speed and style 🙂

Important note: some anti-virus engines might warn you that the Challenge files contain malware. That is not the case – all Challenge binaries downloaded from t2.fi are non-malicious and safe to analyze.

Hall of Fame

Carl “Zeta Two” Svensson (The best community contribution)

Harri Kuosmanen, Finland (Most severe vulnerability at LocalTapiola Hack Day)

Carl “Zeta Two” Svensson, Sweden (the first one to solve the challenge)

Alexander Polyakov, Russia (excellent write-up)

Richard Baranyi, Slovakia (the first one to solve the challenge)

Juha Kivekäs, Finland (excellent write-up)

Peter Kosinar, Slovakia (the first one to solve the challenge)

Ludvig Strigeus, Sweden (the second one to solve the challenge, first one to claim the ticket, fast and elegant)

Vladimir Gneushev, Russia (excellent write-up)

Teem Grammer Nazi, Australia (the first one to solve the challenge)

Alexander Polyakov, Russia (excellent write-up)

Ludvig Strigeus, Sweden (fast and elegant)

More Smoked Leet Chicken, Russia (the first one to solve the challenge – totally stunning performance)

Timo Teräs, Finland (excellent write-up)

Ludvig Strigeus, Sweden (the first one to solve the challenge)

Timo Teräs, Finland (excellent write-up)

Peter Kosinar, Slovakia (first one to solve the challenge, both fast and elegant)

Mathieu Gaspard, France (hands down the best write up)

Timo Hirvonen, Finland (first one to solve the challenge, both fast and elegant)

Mathieu Gaspard, France (best write up)

Florent Marceau, France (first one to solve the challenge, both fast and elegant)

Fabrice Desclaux, France (best solution by means of technical accuracy and detail)

William Whistler, United Kingdom (first one to solve the challenge, both fast and elegant)

Fabrice Desclaux, France (best solution by means of technical accuracy and detail)

Pasi Parviainen, Finland

Samu Ristkari, Finland

Pasi Parviainen, Finland

Matti Nikki, Finland

History

The t2 Challenge was first introduced back in 2005 and it received a huge response – T205-CHALLENGE.EXE was downloaded more than 10,000 times during the first 24 hours! The t2’05 Challenge was a reverse engineering challenge, where the task was to find a hidden message and an email address inside the executable.