Companies House’s security flaw reminds us security measures matter more than ever

Companies House’s security flaw – what was it?

Cyber attacks continues to be one of the main threats to businesses and as attacks get slicker, so too must the defences that protect the UK’s businesses and sensitive information. Even trusted national institutions like Companies House are strengthening their controls, introducing measures such as identity verification for directors and People with Significant Control [PSCs], tighter cyber security protocols and revisiting their registration of company charges.

While regulatory bodies are raising the bar, businesses must do the same across their own digital environments.

Why your business needs strong security measures

With identity theft, impersonation attacks, business email compromise and targeted ransomware now at an all‑time high, cyber criminals have been known to target system vulnerabilities traditionally and in more recent times, they have expanded their focus to exploit the people of businesses as they know that employees continue to be businesses first line of defence, and first point of breach.

Some of the most common risks facing UK organisations today include:

  • Identity fraud targeting company directors
  • Ransomware attacks specifically designed to encrypt or destroy backups
  • Phishing and social engineering aimed at gaining internal access
  • Data theft from unprotected or misconfigured systems
  • Weak endpoints and unmonitored devices creating gaps for attack

Cyber security measures have gotten far more advanced than basic antivirus or firewalls, at CSG we provide businesses with full-rounded, multi-layered approach to protect your systems. All of our security measures are backed by real threat intelligence and proactive monitoring, helping protect you against the most advanced cyber threats – from identity-based risks to full-scale network attacks.

1. Multi-layered cyber security

We combine advanced technologies and protective controls across:

  • Endpoints
  • Email
  • Networks
  • Cloud environments
  • Identity & access management
  • Backup and recovery

This ensures every entry point is defended and every vulnerability is minimised.

2. Threat intelligence that stays ahead of attackers

We use real-time threat intelligence to detect, neutralise and prevent threats before they cause damage. This gives your organisation an early advantage against emerging attacks so that you are ahead of the game when it comes to understanding and preventing attackers.

3. Rapid incident response

In the event of suspicious activity or a confirmed incident, our team acts immediately – containing threats, protecting data and restoring business operations as quickly as possible.

4. Identity verification & authentication controls

From MFA to conditional access and identity protection policies, we help ensure only the right people can access your systems, this significantly reduces impersonation or unauthorised access attempts.

5. Backup & disaster recovery protection

With ransomware now targeting backups directly, resilience matters. As an Acronis Platinum Partner, CSG delivers secure, immutable and monitored backup solutions to ensure your data is protected, even during severe cyber attacks.

CSG are hosting a webinar on Wednesday 29th April 10:00am: Cyber resilience – how fast can your business bounce back? Sign up today so that you can learn how to prepare your business for the unexpected and discover how CSG’s Cloud Disaster Recovery service ensures:

  • Quickest recovery with disaster recovery
  • Your data is protected off‑site and off‑network
  • How AI supports disaster recovery
  • Backups remain clean, uncompromised and recoverable
  • Critical systems can be restored quickly, minimising downtime
  • You maintain business continuity even during severe disruptions
  • Review your current disaster recovery strategy

Our strategic security partnerships strengthen your defence

CSG is proud to hold leading industry partnerships that support the protection we provide:

  • Sophos Platinum Partner: giving clients access to world‑class endpoint protection, MDR, firewalls and AI‑powered threat detection
  • Microsoft Security Partner: delivering identity protection, secure cloud management, device compliance and advanced threat analytics
  • Acronis Platinum Partner: ensuring secure, resilient and immutable backups with integrated cyber protection

These partnerships mean our clients benefit from best‑in‑class technology combined with expert local support.

CSG’s top 5 online security best practices for every business

To strengthen your organisation’s security posture, we recommend implementing these five essential measures:

1. Enable multi-factor authentication [MFA]

Prevents unauthorised access even if passwords are compromised

2. Keep systems updated & patched

Unpatched software remains one of the easiest attack routes for cyber criminals

3. Use strong, unique passwords

Encourage password policies or deploy a secure password manager

4. Train your employees regularly

Human error is still the biggest cause of breaches, awareness reduces risk dramatically.

5. Protect backups with immutable storage

Backups must be ransomware-proof, encrypted and stored off-site or in the cloud.

Cyber threats aren’t slowing down, but with the right partner, your business can stay secure, compliant and resilient.

CSG has been protecting businesses across Wales and England for over 40 years with industry‑leading cyber security solutions.

Book your cyber security review today

Let our experts help strengthen your defences with your security assessment.
Get in touch with CSG to secure your business against the most advanced cyber threats.

Explore our resources to see how we’ve supported businesses across the UK with disaster recovery.

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