Cybersecurity is no longer optional, it is a fundamental requirement for organisations of every size and sector. One of the clearest ways a business can demonstrate its commitment to cybersecurity is by achieving the Cyber Essentials certification.
You may have seen the Cyber Essentials logo displayed in the footer of company websites. This mark signals that the organisation has met a government-backed baseline of security standards designed to protect against the most common cyber threats.
For many businesses, particularly those working with government agencies or handling sensitive information, Cyber Essentials is not just best practice, it’s a necessity.
At tmc3, we hold the Cyber Essentials Plus certification, demonstrating our commitment to high standards of security.
Cyber Essentials focuses on five key areas of protection. Together, they form the foundation of good cybersecurity practice:
Firewalls
A firewall acts as a barrier between your trusted internal network (e.g. your office or home) and untrusted external networks (such as the internet). By filtering incoming and outgoing traffic against predefined security rules, firewalls prevent unauthorised access and reduce the risk of malicious activity.
Systems and software must be configured securely to minimise vulnerabilities. This includes disabling unnecessary features, applying secure settings, and regularly reviewing system access. Secure configuration often follows penetration testing, where professionals often regarded as ethical hackers identify weaknesses that can then be remediated.
Not every employee needs access to every system. Cyber Essentials requires that user access is based on the principle of “least privilege”, ensuring individuals have only the permissions they need to perform their role. Regularly reviewing accounts, removing access for leavers, and using separate admin accounts all strengthen security.
Malware, including viruses, ransomware, and spyware, can compromise data, disrupt operations, or damage systems. Effective protection includes installing and updating anti-malware tools, using email and web filters, and restricting unauthorised applications. These steps help safeguard against malicious software infiltrating your environment.
Cyber attackers often exploit vulnerabilities in outdated software. Patch management ensures that security updates are identified, tested, and applied promptly. Just as a gaming developer releases patches to fix exploits, organisations must continuously update their systems to close vulnerabilities before attackers can take advantage.
While not one of the five core controls, penetration testing is an important practice that complements Cyber Essentials. By simulating a cyberattack, security professionals and penetration testers identify weaknesses that a malicious actor could exploit. Organisations can then take corrective action to strengthen their defences.
Cyber Essentials is more than a certification, it’s a clear signal of trust to customers, partners, and stakeholders. It demonstrates that your organisation takes cybersecurity seriously, has implemented recognised best practices, and is actively working to protect its systems and data.
For businesses looking to build credibility, win contracts (particularly in the public sector), or simply reduce their exposure to cyber risk, Cyber Essentials and especially Cyber Essentials Plus, is an essential step.
✅ At tmc3, we proudly display the Cyber Essentials Plus logo at the footer of our website, not just as a badge of compliance, but as proof of our ongoing commitment to resilience, trust, and security.