Watch: TSA Compliance Overview
Cyber Citadel is pleased to announce the launch of our dedicated TSA Code of Practice Testing and Validation Services. As the UK's Telecommunications Security Act (TSA) continues to reshape the compliance landscape for telecoms providers and network operators, our team has developed a comprehensive service offering designed to help organizations assess, validate, and demonstrate their compliance with the TSA Code of Practice requirements.
Understanding the TSA Code of Practice
The Telecommunications (Security) Act 2021 introduced new legal obligations for UK telecoms providers to protect their networks and services against security threats. The accompanying Code of Practice sets out the specific technical requirements and measures that providers must implement to meet these obligations. Covering areas such as network architecture, access controls, supply chain security, and incident response, the Code of Practice represents one of the most comprehensive regulatory frameworks for telecommunications security anywhere in the world.
Compliance is not optional. Ofcom, the UK's communications regulator, has the authority to enforce the TSA requirements and may impose significant penalties for non-compliance. For telecoms providers of all sizes, achieving and maintaining compliance requires a thorough understanding of the technical requirements, a rigorous testing methodology, and ongoing validation to ensure that security controls remain effective as networks evolve.
Key Compliance Deadlines
The TSA Code of Practice is being enforced on a tiered timeline based on provider revenue:
- March 31st 2024 — Tier 1 providers (over £1 billion GBP revenue) must comply.
- March 31st 2025 — Tier 2 providers (over £50 million GBP revenue) must comply.
Critically, this mandate affects both providers AND their suppliers. Organizations within the telecoms supply chain must also demonstrate compliance to maintain their partnerships and contracts.
Enforcement warning: Ofcom has the power to issue fines of up to 10% of annual turnover for non-compliance. Smaller companies risk losing business if they cannot demonstrate TSA compliance to their partners.
Our Testing Approach
Cyber Citadel's TSA Code of Practice testing services are designed to provide organizations with a clear, actionable assessment of their compliance posture. Our approach combines technical security testing with regulatory expertise to deliver results that satisfy both operational security needs and regulatory requirements.
Our testing methodology covers the following key areas:
- Network Architecture Review: Assessing the design and segmentation of network infrastructure against TSA requirements for resilience and isolation.
- Access Control Validation: Testing authentication mechanisms, privilege management, and access governance across network management systems and customer-facing platforms.
- Supply Chain Security Assessment: Evaluating third-party risk management practices, vendor security requirements, and supply chain oversight mechanisms.
- Security Monitoring and Incident Response: Reviewing the effectiveness of monitoring capabilities, alerting thresholds, and incident response procedures.
- Data Protection Controls: Validating the security of customer data, communications metadata, and network configuration information at rest and in transit.
Our TSA compliance team combines deep telecommunications expertise with offensive security skills, ensuring that our testing goes beyond checkbox compliance to identify real-world vulnerabilities that could be exploited by threat actors.
Penetration Testing Services
As part of our TSA compliance offering, Cyber Citadel provides a full suite of penetration testing services tailored to telecommunications environments:
- External Network Testing: Assessing internet-facing infrastructure for vulnerabilities that could allow unauthorized access to internal networks and systems.
- Internal Network Testing: Evaluating the security of internal network segments, identifying lateral movement opportunities and privilege escalation paths.
- Web Application Testing: Testing web-based platforms and portals for common vulnerabilities including SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF).
- Wireless Network Testing: Assessing the security of wireless network infrastructure, including rogue access point detection, encryption weaknesses, and authentication bypass.
- Social Engineering: Simulating real-world social engineering attacks including phishing campaigns, baiting scenarios, and whaling attacks targeting senior personnel.
Privileged Access Management
Effective privileged access management is a critical component of TSA compliance. Our assessment and implementation services cover the key pillars of a robust privileged access strategy:
- Privileged Access Workstations (PAWs): Dedicated, hardened workstations used exclusively for administrative tasks, reducing the attack surface for credential theft and malware infection.
- Access Logging and Monitoring: Comprehensive logging of all privileged access activities, including session recording for audit and forensic purposes.
- Password Vaulting: Secure storage and automated rotation of privileged credentials, eliminating shared passwords and reducing the risk of credential compromise.
Validation and Reporting
Following the assessment phase, we provide a comprehensive validation report that maps findings directly to the TSA Code of Practice requirements. Each finding includes a clear description of the issue, the associated regulatory requirement, an assessment of risk severity, and specific remediation guidance. This report is designed to serve dual purposes: as a technical roadmap for your engineering teams and as evidence of compliance activity for regulatory engagement with Ofcom.
We also offer ongoing validation services for organizations that require periodic reassessment as their networks evolve. As telecoms infrastructure undergoes continuous change through network upgrades, new service deployments, and architectural modifications, regular validation ensures that compliance is maintained and new vulnerabilities are identified promptly.
Getting Started
Whether your organization is beginning its TSA compliance journey or seeking independent validation of existing security measures, Cyber Citadel's team is ready to assist. We work with telecoms providers ranging from large national operators to smaller specialist providers, tailoring our approach to the specific scale, architecture, and risk profile of each organization.
To learn more about our TSA Code of Practice Testing and Validation Services, or to discuss your organization's specific compliance needs, please contact our team. We offer an initial consultation to understand your current posture and recommend the most effective path to compliance.