SECURITY ISN’T ASSUMED — IT’S VERIFIED
Tenendo is a cybersecurity company specialising in offensive security, cloud security, and digital resilience. Founded in 2020, Tenendo supports clients with services including penetration testing, red teaming, cloud environment hardening, security audits, and cyber incident readiness.
With a strong focus on real-world threat simulation and hands-on collaboration, Tenendo helps organisations—from SMEs to critical infrastructure operators—understand, test, and strengthen their security posture. Our team combines deep technical expertise with a practical, risk-based approach, enabling clients to make informed decisions and stay ahead of evolving cyber threats.
Tenendo is trusted by companies in finance, healthcare, SaaS, manufacturing, and the public sector. Whether you’re scaling securely or preparing for compliance and certification, we help you build cybersecurity that works—not just in theory, but in practice.
HOW WE DIFFER
Tenendo is capable of emulating a real-world attack and can do that without any additional information about the infrastructure. Our in-house developed tools and payloads improve chances of a successful breach and can provide the Client with valuable experience in opposing a sophisticated threat actor.
We also incorporate our blue team operations and compliance experience in red team assessments and can provide in-depth recommendations about threat detection and response processes, monitoring and logging techniques, and infrastructure hardening.
Latest insights
Tenendo’s NIST CSF 2.0 Security Assessment helps identify cybersecurity gaps, evaluate maturity across CSF functions, and provide actionable improvements to enhance resilience and align with the latest NIST standards.
Article will help to introduce DORA requirements to those who have years of cybersecurity experience but are very new to DORA.
A Realistic Approach to POS and ECR Systems
How “pentest-adjacent” exercises help answer questions PCI DSS actually asks – but traditional penetration tests don’t.
Exploring PCI DSS version 5.0: thoughts on potential changes like expanding applicability, risk analysis, service provider categories, and aligning with modern security practices. Just an opinion piece, but we’d love to spark some discussion!
Tenendo proposes alternatives and customized red teaming engagements to fit specific customer needs and budgets, ensuring security maturity alignment.
Testimonials
Client success stories
Effective Endpoint Detection and Response (EDR) solutions are essential for detecting and blocking adversary actions across an organisation’s environment. However,…
The main goal of the Technical Audit from a customer request was to understand if the system is scalable or…
The team created several hardware connect-back appliances and used it in a PCI DSS segmentation testing.
Tenendo specialists discovered an unattended staging environment and leveraged its vulnerabilities for sensitive information disclosure. This information was later reused…
This case is a very good example why manual penetration tests are valuable – the team achieved compromise without administrator…
Do you want to know how your organisation will fare against an internal attack? Look no further than Tenendo’s Internal…
Experience and accreditations
Cybersecurity:
- OSCP – Offensive Security Certified Professional
- OSMR – Offensive Security macOS Researcher
- OSCE3 – Offensive Security Certified Expert 3
- OSEP – Offensive Security Experienced Penetration Tester
- OSED – Offensive Security Exploit Developer
- OSWE – Offensive Security Web Expert
- OSWP – Offensive Security Wireless Professional
- CRTO – Certified Red Team Operator
- CRTE – Certified Red Team Expert
- CRTL – Certified Red Team Lead
- CRTS – Certified Red Team Specialist
- CGRTS – Certified Google Red Team Specialist
- CARTS – Certified AWS Cloud Red Team Specialist
- CyberOps Associate
- Cybersecurity Essentials
- CertifiedAppSecPractitioner (CAP)
- Certified Android Exploit Developer
- Certified Mobile Pentester (CMPen-Android)
- Certified Mobile Pentester (CMPen-iOS)
- API Penetration Testing
- eMAPT – eLearnSecurity Mobile Application Penetration Tester
- Burp Suite Certified Practitioner (also listed as BSCP)
- HTB CBBH – Hack The Box Certified Bug Bounty Hunter
- eJPTv2 – INE Security Junior Penetration Tester
Training Labs:
- Hack The Box Pro Lab Offshore (Penetration Tester Level III)
- Hack The Box Pro Lab RastaLabs (Red Team Operator Level I)
- Hack The Box Pro Lab Cybernetics (Red Team Operator Level II)
- Hack The Box Pro Lab APTLabs (Red Team Operator Level III)
- Hack The Box Pro Lab BlackSky: Blizzard (GCP)
- Hack The Box Pro Lab BlackSky: Cyclone (Azure)
- Hack The Box Pro Lab BlackSky: Hailstorm (AWS)
- VHL – Penetration Testing Course
- VHL Advanced+ – Penetration Testing Course Advanced+
- Evilginx Mastery – Evilginx Mastery
- SEKTOR7 WE – Windows Evasion
- SEKTOR7 MDI – Malware Development Intermediate
- SEKTOR7 MDA 1 – Malware Development Advanced – Vol.1
- SEKTOR7 MDA 2 – Malware Development Advanced – Vol.2
- eWPTXv2 – Web application Penetration Tester eXtreme
Compliance and information security:
- CISA – Certified Information Systems Auditor
- CCSP – Certified Cloud Security Professional
- CRISC – Certified in Risk and Information Systems Control
- CGEIT – Certified in the Governance of Enterprise IT
- CISM – Certified Information Security Manager
- ISO 27001 ISMS LA ISO 27001 – Certified ISMS Lead Auditor
- ISO 27001 – Lead Implementor
- NIST CSF 2.0 – Lead Implementor
Test consultancy:
- CTAL-TM – ISTQB Advanced Level Test Manager
- CTAL-TTA – ISTQB Advanced Level Technical Test Analyst
