Claranet cyber security

Claranet cyber security

World-leading security experts

With 17 years’ experience in cybersecurity services and training, for the biggest brands across the globe, Claranet Cyber Security combines the expertise of Sec-1 and NotSoSecure.

Penetration testing

Penetration testing

Personal approach and in–depth knowledge

We make our work together engaging and “NotSoFormal”, personal yet with significant capability. From CREST-approved penetration testing to continuous penetration testing managed services, we are known for the quality of our testing.

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Hacking training

Hacking training

Hands-on, lab-based hacking, taught globally

As the Black Hat conferences' most popular training provider, featuring the renowned “Art of Hacking” course, our ethical hacking credentials are unmatched.

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Audit and compliance

Audit and compliance

Everyone needs a checkup

We help some of the world's best-known organisations achieve and maintain compliance. Our certifications and accreditations give you independent assurance of our expertise.

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Employee cybersecurity awareness

Employee security awareness

The right education is critical

Employees pose one of the biggest risks to a company's cybersecurity. We can tailor an approach for your organisation combining social engineering assessments and employee security awareness training.

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We hack. We teach.

We are trusted for our research in to the very latest security threats and this knowledge continually informs all our cybersecurity work. What we learn from penetration testing in the field, feeds in to our training and vice versa. It's mutually beneficial.

Meet the team who live and breathe cybersecurity

With over 60 penetration testers and a world-renowned security training team – educating over 600 security professionals at Black Hat’s premier Las Vegas event in 2019 – Claranet Cyber Security combines the deep expertise of Sec-1 and NotSoSecure.

Our accreditations

CrestCheckCyber essentialsPCI qualified security assessorPCI approved scanning vendor

Penetration testing, managed services and hacking training

Questions? Get in contact with us

Make a sales enquiry

Please fill out the form below with your sales enquiry and we'll get back to you as soon as possible. If you are looking for technical support please email

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We aim to respond to all email enquiries within 5 working days, but we usually respond within 24 hours.

Speak to a member of the team

Please give us a call on 0207 685 8000 between 09:00 - 17:30 Monday to Friday to speak with one of the sales team.

For small business enquiries, please call Claranet SOHO on 0800 640 8009

Looking for technical support? Our UK support team are available 24x7x365 to help on 0330 390 0500