Penetration Testing for Government

Government organisations at national, regional, and local levels are high-priority targets for nation-state actors, hacktivists, and cybercriminals. Government systems hold sensitive citizen data, classified information, critical infrastructure controls, and provide essential services that must remain operational.

Penetration testing for government entities must address unique challenges including legacy systems, interconnected agency networks, public-facing portals, and strict security requirements. Government pen testing requirements vary by jurisdiction but commonly reference frameworks like NIST SP 800-53, FedRAMP (US), Cyber Essentials (UK), and the Essential Eight (Australia). Government contracts often require security clearances for pen testers working on classified or sensitive systems.

Testing scope typically covers external-facing websites and portals, internal networks, email systems, VPN infrastructure, and cloud environments. Government organisations benefit from regular pen testing to maintain public trust, protect sensitive data, ensure service continuity, and demonstrate accountability for taxpayer-funded systems.

19 providers
Top UK ProviderElite TestersResearch-Driven
SECFORCE logo

SECFORCE

Leading UK offensive security consultancy based in Canary Wharf, delivering CREST-accredited penetration testing and adversary simulation to organisations with the most demanding security requirements.

95
Score
LOCLondon, United Kingdom
Web ApplicationNetworkMobile App+9
CRESTISO 27001Cyber Essentials
Best UK ProviderBest for EnterpriseResearch Leaders
NCC Group logo

NCC Group

Global cybersecurity consultancy with CREST, CHECK, and CBEST accreditation, renowned for deep technical research and comprehensive penetration testing services.

75
Score
LOCManchester, United Kingdom
Web ApplicationNetworkMobile App+13
CRESTCHECKCBEST+6
Nettitude logo

Nettitude

CREST, CHECK, and CBEST accredited UK consultancy within Lloyd's Register, delivering premium penetration testing for government and critical infrastructure.

64
Score
LOCLondon, United Kingdom
Web ApplicationNetworkMobile App+10
CRESTCHECKCBEST+2
Bridewell logo

Bridewell

Fast-growing CREST and CHECK-accredited UK cybersecurity consultancy with deep expertise in critical national infrastructure sectors.

56
Score
LOCBristol, United Kingdom
Web ApplicationNetworkCloud+7
CRESTCHECKISO 27001+1
Mandiant logo

Mandiant

World-renowned cybersecurity firm now part of Google Cloud, delivering threat intelligence-led penetration testing and red teaming informed by front-line incident response experience.

53
Score
LOCReston, Virginia, United States
Red TeamingPurple TeamingNetwork+6
SOC 2ISO 27001FedRAMP 3PAO
Rapid7 logo

Rapid7

Creators of Metasploit offering enterprise penetration testing integrated with their comprehensive vulnerability management and security operations platform.

50
Score
LOCBoston, Massachusetts, United States
Web ApplicationNetworkMobile App+7
SOC 2ISO 27001
Coalfire logo

Coalfire

Compliance-focused cybersecurity advisory firm and FedRAMP 3PAO specializing in penetration testing that meets stringent regulatory requirements.

50
Score
LOCWestminster, Colorado, United States
Web ApplicationNetworkCloud+5
SOC 2FedRAMP 3PAOPCI QSA+1
WithSecure logo

WithSecure

Leading European cybersecurity firm offering penetration testing with deep expertise in EU regulatory compliance including GDPR, NIS 2, and TIBER-EU.

49
Score
LOCHelsinki, Finland
Web ApplicationNetworkCloud+7
CRESTISO 27001
HackerOne logo

HackerOne

World's largest ethical hacker platform with over one million researchers, offering bug bounties and structured penetration testing to the US DoD and Fortune 500.

47
Score
LOCSan Francisco, California, United States
Web ApplicationAPIMobile App+3
SOC 2ISO 27001FedRAMP 3PAO
Integrity360 logo

Integrity360

CREST-accredited pan-European cybersecurity services provider delivering penetration testing and managed security from Dublin with a strong UK and Ireland presence.

44
Score
LOCDublin, Ireland
Web ApplicationNetworkMobile App+6
CRESTISO 27001SOC 2
Black Hills Information Security logo

Black Hills Information Security

Community-driven penetration testing firm known for free security education, open-source tools, Wild West Hackin' Fest, and practical offensive security services.

44
Score
LOCSpearfish, South Dakota, United States
NetworkWeb ApplicationSocial Engineering+5
SOC 2
SEC Consult logo

SEC Consult

Leading European cybersecurity consultancy from Vienna with a prolific vulnerability research program and deep expertise in IoT and embedded systems security.

43
Score
LOCVienna, Austria
Web ApplicationNetworkMobile App+7
ISO 27001
CrowdStrike logo

CrowdStrike

Global cybersecurity leader leveraging world-class threat intelligence from the Falcon platform to deliver intelligence-led penetration testing and red teaming.

43
Score
LOCAustin, Texas, United States
Red TeamingNetworkWeb Application+5
SOC 2ISO 27001
Secureworks logo

Secureworks

Dell Technologies-backed cybersecurity firm with elite Counter Threat Unit intelligence informing enterprise penetration testing and adversary simulation.

41
Score
LOCAtlanta, Georgia, United States
Web ApplicationNetworkCloud+7
SOC 2ISO 27001
Praetorian logo

Praetorian

Offensive security firm founded by former DoD professionals, offering elite penetration testing and the Chariot continuous attack surface management platform.

40
Score
LOCAustin, Texas, United States
Web ApplicationNetworkCloud+7
SOC 2
Offensive Security logo

Offensive Security

Creators of OSCP, Kali Linux, and Exploit-DB, offering elite penetration testing services from the team that trains the world's ethical hackers.

40
Score
LOCNew York, New York, United States
Web ApplicationNetworkRed Teaming+5
OSCP Employer
Bugcrowd logo

Bugcrowd

Leading crowdsourced security platform offering managed bug bounty programs and crowd-powered penetration testing with hundreds of thousands of ethical hackers.

40
Score
LOCSan Francisco, California, United States
Web ApplicationAPIMobile App+3
SOC 2ISO 27001
Synack logo

Synack

FedRAMP-authorized crowdsourced penetration testing platform combining vetted elite hackers with AI-powered Hydra technology for continuous security testing.

39
Score
LOCRedwood City, California, United States
Web ApplicationNetworkAPI+4
FedRAMP 3PAOSOC 2
Securin logo

Securin

Vulnerability intelligence-driven penetration testing firm providing contextual security assessments informed by threat actor exploitation data and ransomware tracking.

34
Score
LOCAlbuquerque, New Mexico, United States
Web ApplicationNetworkAPI+3
SOC 2

Government Pen Testing FAQs

Do government pen testers need security clearance?+

For classified or sensitive systems, yes. Clearance requirements vary by jurisdiction and system sensitivity. Many government pen testing contracts specify minimum clearance levels for testing personnel.

What frameworks govern government pen testing?+

US federal: NIST SP 800-53, FedRAMP. UK: NCSC guidelines, CHECK scheme. Other countries have national cybersecurity frameworks with specific testing requirements for government systems.

How is government pen testing procured?+

Government pen testing is typically procured through competitive tender processes, government-approved supplier lists (like G-Cloud in the UK), or framework agreements. Pre-qualification requirements often include certifications like CREST or CHECK.