Offensive security that reflects real attackers

Boost your cyberresiliencie

Red Team operations, penetration testing and offensive security advisory for organizations that want to know how they will actually be breached.

Trusted by organizations where failure is not an option

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Senior-led only

No assembly-line staffing model. The same senior expert scopes, executes and debriefs the work.

Risk that matters

Findings are prioritized by business impact, exploitability and leadership relevance, not just raw severity.

Built for action

Every engagement ends with a clear remediation path, stakeholder debrief and follow-up support.

services

Our services

Information security consulting, research and mentorship services. Technical & strategic support to enhance your cybersecurity posture through Red Team exercises, highly specialized trainings and advisory.

Red Team Operations

Realistic adversary simulation designed to answer one question: what would a real attacker achieve in your environment? We emulate modern threat actors to test detection, response, and decision-making — not just technical controls.

Penetration Testing

Targeted, impact-driven penetration testing focused on real attack paths and meaningful findings, not compliance checklists and automated scans.

RESEARCH & THREAT INTELLIGENCE

Security research and threat intelligence focused on emerging attacker techniques, tooling, and trends.

VIRTUAL CISO & ADVISORY

Independent advisory to help organizations prioritize risk, define security strategy, and communicate clearly at executive and board level.

Judicial Expert Reports

Independent technical expert reports for civil and criminal proceedings. As an officially licensed Perito Judicial in Spain — registered and numbered by the competent authority — I provide court-admissible expert opinions on cybersecurity incidents, data breaches, digital fraud and related matters.

Trainings, Masterclasses & Talks

Tailored cyber training and executive briefings for companies, leadership teams and public institutions, with practical workshops and keynote talks based on real attacker tradecraft.

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How We Work

Clear process from
scoping to retest

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Discovery & Scoping

Business objectives, threat model, legal boundaries and success criteria aligned with your leadership and technical teams.

Discovery & Scoping

Business objectives, threat model, legal boundaries and success criteria aligned with your leadership and technical teams.

Debrief & Prioritization

Technical findings translated into board-level risk language and an actionable remediation sequence.

Retest & Closure

Validation of corrective actions and final security posture review to ensure risk reduction is measurable.

Case Studies

Selected engagement
outcomes

Anonymised extracts from real engagements. Details altered to protect client confidentiality.

Financial Services · Red Team

Full network compromise in 9 days — from a single phishing click

A €2 bn regional bank engaged Triskel for a no-holds-barred Red Team. Starting with a spear-phishing pretext, the team traversed cloud identity, abused Kerberoastable service accounts, and reached core banking systems — all without triggering a single alert. The debrief drove an immediate re-architecture of the AD trust model and a SOC rule overhaul.

Healthcare · Web & API Pentest

Patient-data segregation flaws found and closed before the audit window

A hospital network’s patient portal had an IDOR chain that allowed cross-patient record access via a predictable token in a batch API endpoint. Triskel delivered a full written PoC, a developer-ready fix brief, and retest confirmation within 12 working days — giving the client clean evidence to present to the regulator on schedule.

Public Administration · vCISO

Cyber governance programme built from zero to NIS2-ready in 90 days

A regional public-sector agency had grown rapidly through mergers and had no coherent security function. Over a 90-day vCISO engagement, Triskel built a risk register, mapped inherited controls to NIS2 obligations, ran a tabletop incident exercise with senior leadership, and established monthly KPI reporting. The CISO role was subsequently filled internally using the framework as a foundation.

Organizations

Committed To
exposing  real risk

Most organizations learn where they are exposed when an attacker finds the gap first. Triskel runs controlled, realistic attack simulations so you can identify the same weaknesses earlier, prioritize them correctly and close them before they become an incident.

Attack-path analysis

Technical evidence translated into remediation priorities and leadership decisions.

The output is not a pile of disconnected findings. It is a clear attack story, validated impact and an actionable remediation sequence.

Engagements delivered
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Automated-only reports. Ever.
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industries

industries in
which we work

We focus on sectors where a breach has real
consequences — for operations, people, and public trust.

FINANCE& FINTECH

Banks, asset managers and fintech firms face sophisticated, persistent adversaries — from organised crime groups to nation-state actors. Compliance frameworks like PCI DSS and DORA set a floor, not a ceiling.

We simulate the attack chains targeting your trading infrastructure, customer-facing APIs and internal networks — delivering findings that matter to your security team and your board.

average cost of a financial services data breach — second highest of any sector (IBM, 2024)
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average cost of a financial services data breach — second highest of any sector (IBM, 2024)
$ 0 M

HEALTHCARE

Healthcare organizations handle protected health information (PHI) under strict rules like HIPAA, making pentesting essential to secure electronic health records, telemedicine apps, and medical IoT devices from ransomware and data breaches. These tests simulate real-world attacks to ensure patient privacy and operational continuity.

GOVERNMENT

Government agencies manage critical infrastructure and citizen data, requiring pentesting to meet standards like FedRAMP and NIST while defending against nation-state threats. It uncovers weaknesses in public-facing portals and internal networks, supporting national security compliance.

E-COMMERCE

E-commerce platforms process vast payment data and user sessions, using pentesting to detect flaws in web apps, shopping carts, and supply chain integrations per PCI compliance. This proactive approach prevents financial losses from fraud and maintains consumer trust.

Testimonials

Why customers
choose Triskel Security

Client names and organisations anonymised where
confidentiality is required.

faqs

Frequently
asked questions

Don’t see your question? Get in touch directly

and we’ll answer it.

What’s the difference between a Red Team exercise and a traditional penetration test?

A penetration test focuses on identifying vulnerabilities in specific systems. A Red Team exercise simulates a real adversary pursuing concrete objectives across people, processes and technology. We help organizations choose the right approach based on their risk and maturity.

We focus on realistic attack paths, business impact and decision support. Our work is not compliance-driven and is performed by senior offensive security professionals, not automated tools or junior testers.

If you already run basic security controls and want to understand how they hold up against real attackers, you are likely ready. We also help organizations assess readiness and define the right starting point.

You get a clear understanding of your real exposure, prioritized recommendations, and insight that supports better security and investment decisions at leadership level.

contact

Talk
to an expert

Not sure where to start?

Every engagement ends with a clear If you’re unsure which service fits your situation, describe your objectives and constraints in the message field. We’ll recommend the most suitable engagement model.remediation path, stakeholder debrief and follow-up support.

Triskel Security
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