Beginner Entry Layer

Ground Zero

No prior cyber experience required. Ground Zero starts with the smallest operational building blocks — one atomic concept at a time, almost impossible to fail, every step building real confidence.

Most security training assumes too much.

Other platforms hand you a Linux terminal and a vulnerable VM and tell you to "have fun." That works for people who already know what a shell is. It loses everyone else.

Ground Zero is the layer beneath that. Before you intercept a packet, you read a URL. Before you crack a hash, you copy plaintext. Before you exploit a service, you tell text from binary. Each operation teaches one concept so plainly that it can't be skipped.

If you've never touched a CLI, never decoded a string, never thought about what's inside a file — Ground Zero is built for you.

The smallest atomic units.
A handful of concepts that everything else in cyber depends on. Ground Zero ops are short, guided, and confidence-building — finish one in a few minutes and immediately recognise it in the wild.
01

What is plaintext?

Tell text from binary. Read raw bytes without flinching.

02

File extensions

What .txt, .exe, .zip actually mean — and don't.

03

Anatomy of a URL

Scheme, host, path, query — every piece, every time.

04

Reading a request

What a browser actually sends. Headers, methods, payloads.

05

What is a hash?

Fingerprints for data. One-way. Recognise them on sight.

06

Copy, paste, decode

The atomic move every analyst performs a hundred times a day.

Operational atmosphere from the first click.
Ground Zero ops are wrapped in the same Mission Control surface as every other operation on AtomicCTF — Briefing, X-Ray, Atomic Notes, Reactor Notes, Objectives. The cyber-operations identity stays. The difficulty starts at zero.
01

Mission Briefing

Plain-English context. What the operation is about, why it matters, how to know you're done.

02

X-Ray Glasses

An optional walk-through that shows exactly what's happening underneath. Use it whenever you need it.

03

Atomic Notes

Linked Library articles for every concept the op touches. Read first or read after — your call.

04

Reactor Notes & Hints

Stuck? Progressive nudges. Never a wall — always a way forward.

Start your first operation.
Sign in to enter the range. Ground Zero ops are unlocked from the first session — no prerequisites, no gatekeeping.
No account yet? Request access — alpha is invite-only for now.