IoT Penetration Testing Providers

IoT penetration testing evaluates the security of Internet of Things devices, their firmware, communication protocols, cloud backends, and mobile companion apps. This holistic approach examines the entire IoT ecosystem for vulnerabilities that could allow attackers to compromise devices, intercept data, or use IoT devices as entry points into corporate networks.

Testers analyse hardware interfaces (JTAG, UART, SPI), extract and reverse-engineer firmware, examine wireless protocols (Bluetooth, Zigbee, LoRa, Wi-Fi), test cloud APIs and management platforms, and assess the security of update mechanisms.

IoT pen testing is critical for manufacturers of connected devices, organisations deploying IoT at scale, and critical infrastructure operators. Common vulnerabilities found include hardcoded credentials, unencrypted communications, insecure firmware update mechanisms, and weak authentication. As IoT devices proliferate across industries from healthcare to manufacturing, ensuring their security is vital for protecting operational technology environments and preventing large-scale compromises.

Related compliance:NIST CSFISO 27001NIS 2
15 providers
Editor's Top PickTop UK ProviderElite Red TeamCREST CertifiedResearch-DrivenTrusted by Enterprise
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.

London, United KingdomContact for pricing
Web ApplicationNetworkMobile App+10
CRESTISO 27001Cyber Essentials
Verified Feb 2026
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.

Manchester, United KingdomContact for pricing
Web ApplicationNetworkMobile App+13
CRESTCHECKCBEST+5
Verified Feb 2026
Nettitude logo

Nettitude

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

London, United KingdomContact for pricing
Web ApplicationNetworkMobile App+10
CRESTCHECKCBEST+1
Verified Feb 2026
Pen Test Partners logo

Pen Test Partners

The UK's largest independent security testing firm, renowned for IoT/OT research, CBEST red teaming, and CHECK/CREST-accredited penetration testing across all sectors.

Buckingham, United KingdomContact for pricing
Web ApplicationNetworkMobile App+11
CRESTCHECKCBEST+4
Verified Feb 2026
PwC Cyber Security logo

PwC Cyber Security

Global Big Four professional services firm delivering CREST, CHECK, and CBEST-accredited penetration testing and red teaming services from London, serving the UK's largest enterprises and regulated organisations.

London, United KingdomContact for pricing
Web ApplicationNetworkIoT+9
CRESTCHECKCBEST+2
Verified Feb 2026
Secarma logo

Secarma

Manchester-based independent cybersecurity consultancy with over 20 years of experience delivering CREST and CHECK-accredited penetration testing, red teaming, and compliance certification services.

Manchester, United KingdomContact for pricing
Web ApplicationNetworkMobile App+6
CRESTCHECKISO 27001+2
Verified Feb 2026
WithSecure logo

WithSecure

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

Helsinki, FinlandContact for pricing
Web ApplicationNetworkCloud+7
CRESTISO 27001
Verified Feb 2026
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.

Vienna, AustriaContact for pricing
Web ApplicationNetworkMobile App+7
ISO 27001
Verified Feb 2026
Packetlabs logo

Packetlabs

CREST-accredited Canadian pen testing firm with a 95% manual-first approach. All testers hold OSCP minimum certification. Zero false positive guarantee.

Mississauga, Ontario, CanadaContact for pricing
Web ApplicationNetworkMobile App+7
CRESTSOC 2OSCP Employer
Verified Mar 2026
IOActive logo

IOActive

Elite boutique security consultancy specializing in IoT, SCADA/ICS, embedded systems, and hardware security research with world-renowned researchers.

Seattle, Washington, United StatesContact for pricing
Web ApplicationNetworkIoT+7
OSCP Employer
Verified Feb 2026
Praetorian logo

Praetorian

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

Austin, Texas, United StatesContact for pricing
Web ApplicationNetworkCloud+7
SOC 2
Verified Feb 2026
ThreatSpike Red logo

ThreatSpike Red

London-based cybersecurity firm offering unlimited, fixed-price penetration testing and red teaming services with ISO 27001 certification and a unique subscription model.

London, United KingdomContact for pricing
Web ApplicationNetworkMobile App+9
ISO 27001Cyber Essentials
Verified Feb 2026

IoT Penetration Testing FAQs

What types of IoT devices can be pen tested?+

Any connected device can be tested including industrial sensors, medical devices, smart home products, automotive systems, wearables, and building management systems.

Do you need physical access to the device?+

Hardware testing requires physical access for interface analysis. Remote testing can cover cloud backends, APIs, and network communications, but physical access enables the most thorough assessment.

What IoT-specific vulnerabilities do testers look for?+

Testers look for hardcoded credentials, insecure firmware updates, unencrypted communications, exposed debug interfaces, weak authentication, and vulnerabilities in wireless protocols.