t2’15 Challenge hint #4: If you failed to read the recipe …

# t2’15 Challenge hint #3

t2’15 Challenge hint #3: What file format was invented on the date contained in the missile system decryptor?

# t2’15 Challenge hint #2

t2’15 Challenge hint #2: If you modify the cookie you will notice that it contains padding.

# Registration closed

The registration for t2’15 is now closed and all available tickets have been sold.

Yes – just like last year, we’re out of seats a month before the event. The only remaining ticket is the one awarded for the most elegant challenge write-up. It’s literally the last chance if you don’t have a ticket by now!

A big thank you to all registered attendees and speakers – you are making this happen. See you next month in Helsinki!

# t2’15 Challenge hint #1

t2’15 Challenge hint #1: One flag is unintentionally a little bit unclear. If you find a password on a level, its hash is the solution to the level.