10 Cybersecurity Companies in London to Know

These London companies provide products and consulting services designed to protect their clients’ data and business functions.

Written by Margo Steines
A close up of a hand inputting a code into a smartphone lock screen.
Image: Shutterstock
UPDATED BY
Dana Cassell | Aug 21, 2024

Cybersecurity firms develop software products and foster expertise aimed at preventing a wide array of digital threats. Their services are crucial to ensuring client companies are able to maintain core business functions and fulfill their duty to protect sensitive data. The cybersecurity industry in the United Kingdom is primarily centered in London, and we’ve compiled a list of some of the city’s top companies providing solutions like email security, firewalls and threat intelligence.

Top Cybersecurity Companies in London

  • Duo Security
  • SailPoint
  • Telesign
  • Fortinet
  • Darktrace
  • Tessian
  • ITC Secure

 

Cybersecurity Companies in London to Know

Fortinet is a security vendor that makes a broad range of software products for cybersecurity, including firewalls, endpoint security solutions and intrusion detection systems. Founded in 2000, Fortinet today serves hundreds of thousands of global customers in industries like manufacturing, education, healthcare, retail and financial services.

 

SailPoint makes cybersecurity products for identity verification, cloud access and data protection. Its platform, which is built with Zero Trust architecture, uses AI to optimize identity intelligence so that organizations can work with sensitive data without risking breaches — a technology that’s particularly useful for remote teams. The company maintains a large presence in the London cybersecurity community.

 

Tessian specializes in email cybersecurity, using AI and behavioral analysis to protect and defend against digital threats to cloud-based email systems. Its platform is able to identify cyber threats like spear phishing, misaddressed emails, unauthorized emails and noncompliance with security measures.

 

Silobreaker’s cybersecurity software searches for all varieties of intelligence data, bringing information that would otherwise be siloed — hence the name — into one viewpoint and a single workflow. It handles cyber threat landscape intelligence, supply chain threat intelligence, vulnerability, asset monitoring and other critical functions to keep client assets and processes safe from digital threats.

 

Telesign is a cybersecurity company developing identity solutions. Through custom API solutions that leverage artificial intelligence, it can protect customers and their networks with multi-factor authentication and real-time identity verification. Telesign’s various security solutions have helped clients in industries like e-commerce and fintech protect against fraud. 


 

Snyk says its technology helps developers “build security directly into their continuous development process.” Its platform equips software teams with real-time vulnerability scanning and risk management capabilities so they can boost productivity and maintain secure digital products. Snyk has a global workforce of more than 1,000 employees that includes team members based in London.

 

Duo Security provides secure access to any application with a broad range of capabilities. It offers multi-factor authentication, remote access, single sign-on and adaptive access policies that are already used by a list of diverse clients, from online banking providers to healthcare and higher education institutions. The company’s headquarters is in Austin, with additional offices in San Francisco and London.

 

Darktrace is an AI-focused cybersecurity company using machine learning to assess and evaluate digital threats. Darktrace’s products include Prevent, Detect, Respond and Heal, which are for increased security, instant threat vision, disarming threats and recovery from cyber attacks, respectively. More than 8,800 customers across 110 countries use its tech.

 

EPAM Systems offers cybersecurity services informed by its deep expertise in software engineering, its holistic vision of the cloud ecosystem and its systematized approach to cyber protections. Starting with proactive defense and following with actionable intelligence as well as rapid threat detection and response, it aims to shore up clients’ people, processes and tech stack.

 

ITC Secure is a cybersecurity firm and Microsoft Solutions Partner. It markets its solutions according to three approaches: security, compliance and identity. ITC Secure is also equipped to provide services in an advisory, developmental or management capacity, depending on client needs. For example, the company employs Chief Information Security Officers (CISOs) who can use their expertise to serve as advisors and strategists for client companies.

 

Rose Velazquez and Abel Rodriguez contributed reporting to this story.

Explore Job Matches.