Red teaming

From first foothold
to final objective.

tstck runs red team engagements built around how capable adversaries think, move, and pursue their objectives. We combine deep technical analysis with our own offensive tooling to uncover paths through systems, identities and trust relationships.

How we think

Weaknesses
connect.

An exposed service can become a foothold. A misplaced permission can unlock greater access. A trusted connection can open the next layer.

We follow those opportunities toward agreed objectives, challenging your organisation’s ability to detect, investigate and respond as the attack develops. Not a checklist of isolated findings — a route.

Every engagement is shaped by your environment and the assets that matter most. We examine where controls hold, where assumptions break down, and how far an attacker could realistically get.

An isometric landscape of graphite platforms and server blocks, a single red path routing between them toward a glowing objective.
How an engagement runs

Four phases, one route.

Scope and objectives are agreed in writing before anything begins, and the route we take is documented as it develops.

Scope & objectives

We agree what matters most, what is in bounds, and what a successful outcome looks like — the crown jewels, the rules, the authorisation.

Reconnaissance

We map the environment as an adversary would: exposed services, identities, suppliers and the trust relationships that connect them.

Foothold & escalation

We take the opening that exists, then follow it — access to privilege, privilege to reach, one layer to the next.

Objective & report

We reach the agreed objective, then hand over the paths we uncovered, the evidence behind each finding, and what to fix first.

What you get

A clear account
of the way through.

You get a clear account of the paths we uncovered, the evidence behind each finding, and practical priorities for strengthening your defences.

We find the way through. You gain the insight to close it.

  • The attack narrative — each step, in order, and what made it possible.
  • Evidence for every finding, so nothing rests on assertion alone.
  • Detection and response findings — what your team saw, what they missed, and when.
  • Prioritised remediation aimed at the connections that carried the attack, not just its endpoints.
  • A debrief with the people who have to act on it, technical and otherwise.
A graphite cube cut open to reveal nested layers, a single red thread running from the surface to its core.
Our own tooling

We bring more than
off-the-shelf scanners.

The tools we build go into our engagements, and what the engagements teach us goes back into the tools. That loop is the reason both get sharper.

Restricted Tooling HackWP PatchDiffer Aswap
Get in touch

How far could
an attacker get?

Tell us what matters most in your environment. We will come back with a scope, a realistic set of objectives and a plan for getting there.