Offensive Security

Customised Adversary Simulation

The engagement combines only the authorized techniques needed to explore a defined adversary scenario.

Design an adversary simulation See how scenarios are tailored

A customer-specific objective
Tailored technical or human scenarios
Explicit approvals and stop conditions
Scenario evidence and lessons

The proposition

Explore unusual attack questions

Explore an unusual or cross-functional attack question without forcing it into a fixed testing package. The work focuses on a customer-specific objective and records where evidence or authorization limits the conclusion.

Tailoring starts with the decision

Some security questions cross applications, identities, suppliers or operational processes and do not fit a standard assessment. A customised simulation begins by defining the decision the result must support.

Cyberus then proposes a bounded scenario and methods proportionate to that question. Techniques involving people, physical locations or third parties are included only with explicit authority and suitable safeguards.

From question to scenario lessons

Security question. A concern that standard testing packages do not frame well enough to answer.
Bounded scenario. A plausible path chosen to test that question, limited by agreed authority and exclusions.
Controlled execution. Staged activity under named oversight, with stop conditions ready if risk grows.
Scenario lessons. What the exercise showed about dependencies, and where its evidence ends.

Why it matters

Business risk: A worry that spans applications, people and suppliers can stay unanswered because no standard test package fits it.
Decision it supports: Leaders can decide whether a feared route is worth funding a fix, monitoring or further study, based on evidence.
What you receive: You receive a scenario charter, an activity timeline and lessons that state what the exercise did not cover.

A simulation built for one decision

Scenario charter

Defines the objective, participants, authority, exclusions and success evidence.

Why it matters: Without agreed authority and exclusions, a bespoke exercise can drift into harm or dispute.
Supports: Sign-off from accountable owners before activity starts

Technique design

Selects only methods relevant to the scenario and records their controls.

Why it matters: Methods that do not serve the question add risk and noise without improving the answer.
Supports: Choosing proportionate techniques and their safeguards

Activity timeline

Reconstructs important actions, observations and decisions during execution.

Why it matters: Memory alone is a weak basis for conclusions when many teams and systems were involved.
Supports: A shared account of what happened and when

Lessons report

Explains control dependencies and proportionate improvement options.

Why it matters: Lessons only help if owners can act on them without over-reading one exercise.
Supports: Improvement choices tied to the original question

How a custom simulation is controlled

Define the decision
State the security concern, intended audience and useful evidence.
Why it matters
A clear decision keeps the exercise from becoming a general hunt with no usable answer.
Design the scenario
Select plausible steps, dependencies and safeguards with relevant owners.
Why it matters
Involving owners early exposes hidden dependencies and keeps the scenario believable.
Approve the plan
Record authority, timing, communications, exclusions and stop conditions.
Why it matters
Recorded approvals protect staff and the business if something unexpected happens mid-exercise.
Run and reconstruct
Execute in stages and review what the scenario demonstrates and what it does not.
Why it matters
Staged execution and honest limits stop leaders from reading more into the result than it shows.

Why choose Cyberus for customised adversary simulation

Starting point
A specific security decision
Design
Tailored and explicitly approved
Control
Named oversight and stop conditions
Result
Scenario-specific lessons

Team certifications

Individual qualifications held by members of the Cyberus team. They are not company accreditations, and not every consultant on an engagement holds every badge.

OSCP
Hands-on penetration testing skills, from enumeration to exploitation and privilege escalation.
OSWE
Web application security skills, including source code review and exploiting complex web vulnerabilities.
OSED
Exploit development skills, including analysing Windows software and writing custom exploits.
OSCP+
Hands-on penetration testing skills, from enumeration to exploitation and privilege escalation.
CRTA
Red team analysis skills, including adversary tactics and techniques.
eWPT
Web application penetration testing skills, from assessment method to exploiting common web flaws.
eWPTX
Advanced web application penetration testing skills, including complex attack techniques.
eMAPT
Mobile application penetration testing skills for Android and iOS applications.
BTL1
Defensive security skills across security operations, phishing analysis, forensics and incident response.
eCIR
Incident response skills, including investigating, containing and analysing security incidents.
CRTE
Red teaming skills focused on Windows environments and the tradecraft used against them.
CCT
EC-Council's Certified Cybersecurity Technician (CCT) validates foundational security, network, and defense skills.
Security+
CompTIA Security+ validates core skills in baseline cybersecurity, risk management, and threats.