Kryptós CronOS
🌊

Our First Journey

30 stages

Athens → Santa Cruz → Monterey Bay

A beginner's journey across the world. Networking is the highway system that gets you from Athens to Santa Cruz. The internet is the surf you ride when you arrive. Security hygiene is what keeps you safe on a fishing trip in Monterey Bay.

📜

Certificate Paths

These stages map to Network+, Security+, ISC² CC, and CySA+ exam domains →

©

Some stages in this module reference ATT&CK® techniques for educational context. MITRE ATT&CK® is a registered trademark of The MITRE Corporation. Learn more ↗CC BY 4.0

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1
CTF

Port of Piraeus

Leaving Athens

+50 🪙🗺️
✈️
2
CTF

Athens International Airport

Every Device Needs an Address

+50 🪙📮
🧳
3
CTF

Baggage Claim, JFK Airport

Packing the Bags

+50 🪙📦
🛣️
4
CTF

I-80 West, Denver Interchange

The Highway Interchange

+50 🪙🔀
🗺️
5
CTF

AAA Travel Office

The Internet's GPS

+50 🪙🔍
🛂
6
CTF

US Customs & Border Protection

Your Hardware Passport

+50 🪙🪪
🚧
7
CTF

City Limits — Santa Cruz

The City Checkpoint

+75 🪙🛡️
8
CTF

Santa Cruz Harbor

The Harbor Gates

+75 🪙🔭
🏙️
9
CTF

Downtown Santa Cruz

Neighborhoods and Districts

+75 🪙🏘️
🌅
10
CTF

Highway 1, Pacific Coast

Rules of the Road

+75 🪙📡
🏄
11
CTF

Steamer Lane Surf Report Board

Reading the Wave Report

+75 🪙🌊
🛒
12
CTF

The Surf Shop on Pacific Ave

Your Surfboard

+75 🪙🔬
🎓
13
CTF

O'Neill Surf School

The Surf Shop and the Surfer

+75 🪙🤝
🏖️
14
CTF

Lifeguard Tower #3, Cowell Beach

The Safety Leash

+100 🪙📜
🎫
15
CTF

Surf Club Check-In Desk

The Membership Wristband

+100 🪙🍪
📞
16
CTF

Surf Conditions Hotline

Calling the Surf Hotline

+100 🪙🔌
🌊
17
CTF

The Break at Pleasure Point

Size of the Wave

+100 🪙📊
⏱️
18
CTF

Surf Forecast Terminal, Boardwalk

Waiting for the Set

+100 🪙
📋
19
CTF

Surf Contest Archive, Beach Flats

The Tampered Records

+100 🪙☣️
🏖️
20
CTF

Four Mile Beach

Spreading the Crowd

+100 🪙⚖️
🎣
21
CTF

Fisherman's Wharf

Spotting Fake Bait

+110 🪙🪝
🚢
22
CTF

Charter Boat Dock, Coast Guard Pier

The Double Lock

+110 🪙🔐
🎏
23
CTF

The Tackle Shop, Cannery Row

The Bait Locker Combination

+110 🪙🔑
📡
24
CTF

Open Water, Monterey Bay

Open Radio Frequencies

+110 🪙📶
🍺
25
CTF

The Dockside Cantina

The Fisherman's Tall Tale

+110 🪙🎭
🔧
26
CTF

Boat Maintenance Yard, Santa Cruz Harbor

Patching the Hull

+110 🪙🩹
🐟
27
CTF

Catch Inspection Station, Moss Landing

When the Net Tears

+110 🪙🔎
🌿
28
CTF

The Kelp Forest, Monterey Bay

Navigating the Kelp Beds

+110 🪙🧭
🏢
29
CTF

The Harbor Master's Office

What You Share and With Whom

+110 🪙🕵️
30
CTF

Santa Cruz Small Craft Harbor — Return to Dock

Man Overboard Protocol

+150 🪙🚨