OnSecurity is a UK-based penetration testing and cybersecurity services company that provides offensive security testing and advisory services to organisations. Their core offering is penetration testing, delivered with a focus on real-time, actionable insights and threat detection. The company offers a range of testing services including phishing simulation testing, and provides an instant online quoting tool for penetration tests, indicating a streamlined, accessible service model. Beyond technical testing, OnSecurity produces educational content aimed at security practitioners and business leaders, covering topics such as cybersecurity metrics for board-level reporting, risk assessments, vulnerability management best practices, compliance guidance (including frameworks like ISO 42001), and SaaS security. This content is targeted at CISOs and security teams who need to communicate security posture and programme effectiveness to executive stakeholders. The company's service approach emphasises translating technical security findings into business-relevant outcomes, including risk reduction measurement, cost avoidance, ROI demonstration, and regulatory compliance alignment. Their content and services address the full security lifecycle, from identifying vulnerabilities and conducting penetration tests to helping organisations build reporting frameworks that demonstrate security value to boards and executives. OnSecurity serves organisations across various sectors, with particular relevance to businesses subject to UK and European regulatory requirements. Their published resources reference standards and frameworks relevant to compliance, vendor/third-party risk management, and human risk reduction through phishing simulations and security awareness training.