Tenendo

Tenendo

Tenendo Limited

Cork, Ireland

Penetration TestingOffensive SecurityThreat IntelligenceIncident Response
Founded 2020Serves Enterprise, SMB, Critical Infrastructure, Public Sector
Profile last updated: May 11, 2026

About

Founded in 2020, Tenendo is a cybersecurity company based in Cork, Ireland working in penetration testing, offensive security, threat intelligence +6 more.

Tenendo is an offensive cybersecurity agency founded in 2020. It provides penetration testing, red teaming, vulnerability assessment, cloud security assessment and hardening, security audits, threat intelligence, security due diligence, CISO as a Service, and cybersecurity training. Services include PCI DSS scanning and penetration testing, DORA compliance support, SOC and EDR effectiveness evaluation, and cyber incident readiness, such as ransomware readiness assessments and tabletop exercises. Clients range from fintech and financial institutions to oil and gas, telecoms, and SMEs. The company works largely remotely and has a partnership with AmonSul and Trausta for DORA compliance.

Location

Cork, Ireland

Founded

2020

Company type

Limited company

Legal name

Tenendo Limited

Focus areas

offensive securitypenetration testingred teamingPCI DSSDORAcloud securitythreat-led penetration testingsecurity audits

Languages

EN

Services & products

Security domains

Penetration TestingOffensive SecurityThreat IntelligenceIncident ResponseCloud SecurityApplication SecurityDetection & ResponseGRC & ComplianceSecurity Awareness

How they deliver

Professional ServicesConsultingTraining

Customers

EnterpriseSMBCritical InfrastructurePublic Sector

Industries served

FinanceFintechHealthcareSaaSManufacturingOil & GasTelecommunications

Compliance & partners

Compliance frameworks

ISO 27001NIST CSFPCI DSSDORANIS2GDPR

Credentials & affiliations

Certifications

ISO 27001:2022

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