GOVERNMENT PENETRATION TESTING

Protect public services with expert-led penetration testing tailored to UK government standards.

Trusted by leading organisations

Wise, a financial technology company
Jojo Maman Bebe, a baby clothing retailer and part of Next Plc
Pluxee, a Software as a Service (SaaS) company and part of Sodexo
Block, an IT Managed Services company
StoreFeeder, an e-commerce company and part of the Royal Mail Group
Unicard
Oddballs Apperal
Kyloe Partners, a recruitment technology company

Government cyber security is not just a technical challenge; it underpins national security, public trust, and the reliable delivery of essential services. Departments manage vast amounts of confidential citizen and operational data, making them attractive targets for increasingly sophisticated attacks. A breach can expose personal information, disrupt vital public services, and damage confidence in government institutions.

Why is cyber security important in government?
The importance of cyber security in government

In today’s digital era, government agencies face an intensifying cyber threat. A 2024 report by the National Audit Office (NAO) revealed that independent assessments of critical departmental IT systems found significant gaps in cyber resilience, leaving essential services open to disruption. As digital transformation accelerates, the government’s attack surface continues to expand, heightening the need for robust and proactive security measures. Unresolved vulnerabilities can compromise vital operations, expose sensitive data, and weaken trust in public systems. Strengthening cyber security helps protect information, maintain service continuity, and reinforce the reliability of government operations.

Government penetration testing
with Sentrium

Speak with our experienced consultants to assess your organisation’s resilience, manage cyber risk, and maintain trust in your public services.

Book a pentest

Legacy systems and outdated software create security risks

Legacy systems and technical debt

Many government departments continue to rely on outdated IT systems that are difficult to update and increasingly incompatible with current security requirements. These legacy platforms create blind spots that can be exploited by attackers, putting essential services and confidential information at risk. Penetration testing exposes these vulnerabilities and delivers actionable insight to strengthen security without disrupting critical operations.

Multi-tenanted architecture

Public‑facing services

Government agencies provide a growing number of online services to citizens, such as tax self‑assessments, council services and benefits management. Each public‑facing portal increases the attack surface and offers potential entry points for malicious activity. Penetration testing replicates real‑world attacks to uncover weaknesses before adversaries can exploit them, ensuring confidential national data and essential services remain protected and available.

Switching off CCTV systems or door access controls

Compliance and regulatory complexity

Government departments must meet strict and evolving obligations, including maintaining PSN compliance to safeguard sensitive data. Managing these obligations across diverse systems, departments, and third‑party providers is complex, and gaps can lead to service restrictions or loss of network access. Penetration testing validates that controls meet compliance standards, identifies weaknesses before they become regulatory breaches, and supports the assurance required to maintain critical operations.

Advanced Persistent Threats (APTs)

Advanced Persistent Threats (APTs)

State‑sponsored groups and other advanced threat actors continuously target government systems, seeking to access sensitive data, disrupt operations, or undermine public trust. Their tactics evolve rapidly, making it vital for government departments to enhance detection capabilities, improve incident response, and build resilience against persistent and highly capable adversaries. Penetration testing validates defences against these threats, providing assurance that systems can withstand real‑world attacks.

Start your security assessment

Why is government penetration testing a necessity?

Government departments manage vast stores of highly sensitive information, including citizen records, operational data, and details of national infrastructure. This information flows through interconnected systems and networks, often relying on ageing platforms and legacy integrations. Limited resources and inconsistent system upgrades create vulnerabilities that, if exploited, could expose personal data, compromise critical services, and reduce public confidence.

Many government departments deliver services directly to the public through online platforms and digital channels. These services rely on interconnected applications, networks, and IT systems that must be thoroughly tested to minimise the risk of cyber‑attacks and ensure that critical data and functions remain secure and isolated if a breach occurs.

Explore the core services we provide
for government:

Penetration testing services

Network penetration testing

We assess networks, including WAN and PSN connections, to find vulnerabilities and guide remediation. Testing covers servers, networks, and end-user devices handling sensitive data with minimal disruption.

Penetration testing quote

Cloud penetration testing

Government agencies use a mix of on-prem and cloud. As services move hybrid, compliance and secure configuration is vital. We assess cloud against best practicees to protect data and ensure service delivery.

Vulnerability Assessment

Vulnerability Assessment

Regular VAs reveal and prioritise weaknesses before attackers exploit them. We scan systems, networks, and apps to deliver clear insights, helping you stay compliant and protect data and public services.

At Sentrium, we understand the unique cyber security challenges facing government agencies. With extensive experience in penetration testing across web applications, cloud environments, mobile platforms and internal networks, we help government departments uncover and address weaknesses before they can be exploited.

Our approach to government cyber security goes beyond standard penetration testing. We understand the importance of safeguarding citizen data, maintaining compliance, such as PSN requirements, and securing the critical systems that keep essential services running.

We recognise that government operates in a highly sensitive and mission‑critical environment, where any breach can compromise citizen confidence and disrupt vital operations. Our experienced team delivers expert penetration testing and strategic support to help you manage risk, maintain compliance, and protect the services that millions of people depend on.

Start a Government pentest

In their words

Sentrium have extensive knowledge of security and penetesting, and have provided us with many valuable insights. We are grateful for their exemplary work and dedication to giving a top quality service.

Director, Manufacturing

Sentrium is a trusted partner we have used for several years. Their services are second-to-none, and the team's communication, specialised knowledge, and flexibility are commendable.

IT Manager, Software Development

Working with Sentrium Security on our penetration testing was a pleasure. Their services were comprehensive, well organised, and delivered with professionalism. They get a 5/5 from us.

Chief Information Security Officer (CISO), Telecommunications

Sentrium surpassed our expectations. They identified vulnerabilities and provided recommendations that were very easy to follow. Their commitment to quality is apparent, and we gladly recommend them.

Chief Operating Officer, Financial Services

We engaged Sentrium for our annual pentesting. Their team demonstrated great skills, I was surprised to find they discovered some issues our previous company had missed! I will use them again next year.

Head of IT Security, International E-commerce

I'm impressed with the speed and quality of services provided by Sentrium. Great communication and a flexible, professional and approach throughout. I'll certainly be using Sentrium again in the future!

Head of Technology Risk & Security, Financial Services

Sentrium has been really helpful in improving our cyber security. They keep in mind our budget and explain things clearly. Cyber security went from being an enigma to something we can tackle with confidence!

Project Manager, Charity Sector

Adam and James have been great to work with. Very clear communication from start to finish making the process very easy to complete whilst taking the time to understand our needs and queries.

Director, Software as a Service (SaaS) Company

Ready to discover your security gaps?

Get in touch