EY Cybersecurity: London MSSP

Q: What industries does EY Cybersecurity serve?

Financial Services, Healthcare, Government & Public Sector, Manufacturing, Energy & Utilities, Technology, Retail & E-Commerce

Last reviewed August 6, 2026How we evaluate providers

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Trustpilot1.2 on a 1 to 5 scaleBased on 213 public reviews

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Provider Snapshot

Core services: Managed Detection & Response (MDR), Security Operations Center as a Service (SOCaaS), Incident Response +3 more
Platforms: Splunk, Microsoft Sentinel, CrowdStrike +1 more
Client focus: Enterprise (1000+)
Response SLA: 30 minutes
Website: ey.com

EY Cybersecurity runs five security operations centers spanning the US, UK, India, Australia and Poland, delivering Managed Detection & Response (MDR), Incident Response, Cloud Security and Identity & Access Management. Headquartered in London, it works with large enterprise buyers such as Financial Services, Government & Public Sector and Energy & Utilities operators, backing detection on Splunk, Microsoft Sentinel, CrowdStrike and IBM QRadar with a 30 minute response commitment.

Company Details

Headquarters: London, UK
Founded: 1989
Employees: 1000+
SOCs: 5
Response SLA: 30 minutes

Pricing

Pricing Model: Custom
Starting Price: Custom quote

About EY Cybersecurity

EY's dedicated cybersecurity practice employs 7,000+ security professionals globally, delivering managed security services, cyber strategy, incident response, and compliance advisory to the world's most complex organizations. Their EY Defense managed security services provide 24/7 threat monitoring and response from global Cyber Fusion Centers, backed by proprietary threat intelligence and AI-powered analytics. EY has particular depth in mergers and acquisitions cyber due diligence, supply chain security, operational technology protection for industrial clients, and Board-level cyber governance advisory — making them a strong choice for executive-level security engagements alongside operational managed security. Their global network of 150+ countries and deep regulatory knowledge across financial services, healthcare, and energy makes EY a trusted partner for multinational enterprises requiring consistent security governance across borders.

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Services Offered

EY Cybersecurity offers 6 security services. Click any service to see other providers that offer it.

Managed Detection & Response (MDR)Security Operations Center as a Service (SOCaaS)Incident Response Cloud Security Identity & Access Management (IAM)Compliance Management

Industries Served

EY Cybersecurity has experience serving 7 industries, including the regulatory requirements and security challenges unique to each.

Financial Services Healthcare Government & Public Sector Manufacturing Energy & Utilities Technology Retail & E-Commerce

Supported Platforms

EY Cybersecurity supports 4 security platforms. MSSPs with hands-on experience in your tools can onboard faster and tune detections more accurately.

Splunk Microsoft Sentinel CrowdStrike Falcon IBM QRadar

Client Company Sizes

EY Cybersecurity serves Enterprise (1000+) organizations. Providers focused on your company size tend to offer pricing and service levels that match your budget and team capacity.

Enterprise (1000+)

Compliance Frameworks Supported

EY Cybersecurity provides compliance support for 8 frameworks. Compliance support typically includes control mapping, evidence collection, audit preparation, and ongoing monitoring to keep you audit-ready year-round.

SOC 2HIPAAPCI DSSGDPRISO 27001NIS2SOXNIST CSF

Certifications Held

EY Cybersecurity holds 1 certification. Each certification means the provider passed an independent audit of their security practices, operations, or technical skills.

ISO 27001

EY Cybersecurity Categories and Capabilities

These comparisons and profile attributes are based only on listed services, customer fit, technology support, and verified research data.

Listed in and relevant comparisons

Healthcare MSSPsListed healthcare experience Microsoft Sentinel MSSPsListed Microsoft Sentinel support MDR ProvidersVerified MDR capability or listed MDR service

Regions served

Global
North America

Verified capabilities

24/7 Monitoring
Managed Detection & Response
Threat Hunting
Incident Response Retainer
Vulnerability Management
Cloud Security
Identity Security
Network Security
Endpoint Security
Compliance Services
SOC as a Service
DFIR Services

Technology integrations

AWS
Microsoft Azure
Google Cloud Platform
Microsoft Entra ID
Microsoft Defender for Office 365

What Should You Ask When Evaluating EY Cybersecurity?

Before engaging any MSSP, use these questions to assess whether the provider is the right fit for your organization. These apply to EY Cybersecurity and any other provider on your shortlist.

What is included in the base service vs. what costs extra? Clarify whether incident response, compliance reporting, and additional log source onboarding are included or billed separately.
What response actions does the provider take directly? Some MSSPs only send alerts for your team to act on. Others take containment actions like host isolation or account lockout on your behalf.
What does the onboarding process look like? Ask about typical onboarding timelines, how much work your team needs to put in, and when full monitoring coverage goes live.
Can you provide references from similar organizations? Ask for references from companies in your industry and size segment. The experience of similar organizations is the best predictor of how the MSSP will perform for you.
What happens if we need to switch providers? Understand data portability, contract termination terms, and transition support. A transparent exit process is a sign of a provider that prioritizes long-term trust over lock-in.