The Challenges
Six challenges. Two paths each. Every flag you capture teaches a real skill, whether you solve the cipher or hack the page.
Caesar's Shadow
Julius Caesar / Continental Army
A substitution cipher intercepted from a Continental Army dispatch. Break the encryption that protected a revolution.
The Culper Codebook
Washington's Culper Spy Ring
A partial codebook and a numbered message. Decode the intelligence that saved a nation.
Madison's Secret
James Madison
A message encrypted with a book cipher. The key is a document you already know by heart, or should.
Jefferson's Wheel
Thomas Jefferson
An interactive cipher wheel and a message that was considered unbreakable. Jefferson built the hardware. You break the software.
Invisible Ink
James Jay / Culper Ring
A message hidden where no one thought to look, buried in image data, metadata, or the page itself.
The Signal
Modern Steganography
Something has been hiding in plain sight since the beginning. You've heard it a hundred times. Now look at it.