Cyber

Grant Thornton takes a consultancy‑first approach, focusing on solving your business problems rather than selling software. We rigorously test every solution against real‑world threat actor techniques and use the same technology internally that we deploy for clients. This means you get expert guidance backed by proven, battle‑tested technology. 

Our Defence Assured guarantee places the risk on us, not you. If we fail to prevent a breach, we provide incident response up to your contract value. Our services are delivered by a UK‑based, CREST‑accredited team operating 24/7, supported by SANS‑qualified analysts. You also receive dedicated technical account management, bespoke reporting, and continuous threat intelligence. We work with a focused technology stack so we remain true experts in what we deliver. 

We support organisations across all sectors, including financial services, retail, hospitality, manufacturing, healthcare, and professional services. Our Cyber Defence Centre protects clients globally, from SMBs to large enterprises.

Managed Security Services provide continuous monitoring, detection, and response across your IT environment. Our MSS offering combines industry‑leading technology with UK‑based cyber experts who act as your trusted security partner. Unlike traditional vendors, we take responsibility for your protection through our Defence Assured guarantee. 

MXDR is our flagship 24/7 security service. It delivers real‑time detection and automated response across endpoints, identity, network, and email. Our UK SOC actively hunts for threats and responds within minutes, not hours. 

We operate with a mean time to respond of nine minutes and a mean time to resolve of twenty‑three minutes. All events are handled within a one‑hour service level objective. When threats are detected, our team can immediately contain devices, restrict authentication, reset credentials, remove malware, and terminate malicious sessions.

Yes. Our MXDR service extends into full Cloud Detection & Response, including CNAPP, CSPM, workload protection, containers, serverless, and hybrid visibility. This gives you unified oversight across your entire cloud and on‑premises environment. Learn more about cloud detection and response.

We manage the platform end‑to‑end and protect against phishing, spam, zero‑day malware, business email compromise, malicious URLs, and account takeover. Protection extends beyond email into Teams, SharePoint, OneDrive, Google Workspace, Slack, Box, Dropbox, and Citrix ShareFile.

Our SOC is based entirely in the UK, operating 24/7/365 with global capability. All monitoring, detection, and response activities are performed by UK cyber experts.

Yes. Our incident response team is CREST‑accredited and provides full forensic investigation and incident handling.

Exposure Management identifies and prioritises vulnerabilities across your environment. We combine automated scanning with risk‑based prioritisation so you can focus on the issues that matter most. You also receive clear remediation guidance aligned to your business priorities. 

This service continuously monitors the dark web and surface web for leaked credentials, exposed data, mentions of your organisation, and signs of planned attacks. Critical findings are typically reported within twenty‑four hours so you can act quickly.

Yes. Through our partnership with Netskope, we provide SSE and SASE capabilities that deliver zero trust, data loss prevention, and modern VPN‑replacement technologies. These services complement our MXDR and MSOC capabilities.

Our services are typically best suited for organisations with fifty to ten thousand employees, though we can tailor solutions for smaller teams.

Penetration testing simulates real‑world attacks to uncover vulnerabilities across your systems, applications, and networks. Our ethical hackers provide clear, actionable insights to help you strengthen your security posture.

Operational resilience is your ability to withstand, adapt to, and recover from cyber disruptions while maintaining critical operations. It reduces downtime, protects essential services, and improves regulatory confidence. 

Tabletop exercises are guided workshops that simulate realistic cyber incidents. They help your teams practise decision‑making, validate processes, and identify gaps in your response strategy. 

Business continuity focuses on keeping operations running during disruptions. Operational resilience goes further by anticipating threats, building adaptive capacity, testing recovery, and continuously improving your organisation’s readiness.

We provide strategic cyber advisory across security strategy, operating models, digital transformation, risk frameworks, board reporting, M&A due diligence, and third‑party risk. 

We assess the security controls, data handling, access levels, and incident response capabilities of your suppliers and partners. We also support skills assessments, recruitment, training, and the design of effective security teams. 

We assess against NIST CSF, ISO 27001/27002, Cyber Essentials, PCI DSS, GDPR, sector‑specific regulations, and custom frameworks. Our assessments include maturity ratings and practical recommendations.

Yes. We can map controls across multiple frameworks at once, highlight overlaps, identify unique gaps, and create a unified remediation roadmap.