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MDR SERVICES · LONDON

Managed Detection and Response (MDR) Services

Managed Detection and Response (MDR) gives your business ongoing visibility of potential threats, with suspicious activity monitored, investigated and responded to before it can cause damage.

  • Included as part of our Managed Security Service
  • Works alongside other cyber security measures
  • Access to human security experts when a threat is identified
  • Strengthens protection across your IT

WHY MANAGED DETECTION & RESPONSE

Why Do Businesses Need MDR?

Traditional security tools can block many threats, but they cannot always identify suspicious activity early enough or tell you what needs immediate attention. MDR services add continuous monitoring and expert investigation, so potential cyber incidents can be identified and acted on more quickly.

Improve Threat Detection

MDR monitors your IT environment for unusual or suspicious activity. Proactive threat detection streamlines identifying threats that may get past standard security controls and lead to incidents such as data breaches.

Respond Faster to Security Incidents

When suspicious activity is detected, it needs to be investigated quickly. MDR helps determine whether an alert represents a genuine threat and supports a faster response when action is required.

Reduce the Burden on Internal Teams

Most SMEs do not have a dedicated security team monitoring systems around the clock. MDR gives your IT team access to specialist security expertise without having to build that capability entirely in-house.

Strengthen Your Overall Cyber Security

MDR provides an additional layer of monitoring and response to your wider cyber security setup.

Looking for MDR services in London?

Sereno includes MDR within a Managed Security Service designed to strengthen your security posture.

MDR SERVICES · LONDON

Protecting Your Business with MDR

MDR services add extra protection by monitoring for suspicious activity across the systems and devices your team uses every day. As part of Sereno's Managed Security Service, it complements other security controls to detect and respond to threats faster.

  • MDR for Microsoft 365 & Cloud Accounts

    Cloud accounts are a common target for cyber attacks, particularly when login details have been stolen or compromised. MDR can monitor for unusual sign-ins and other security events across Microsoft 365 and cloud applications.

  • MDR for Devices & Endpoints

    Laptops, phones and other devices can provide another route into business systems. Device-level MDR monitors endpoints for signs of malware and other suspicious behaviour that may indicate a security threat.

  • MDR & Phishing Protection

    Phishing emails aim to steal login details or persuade users to open malicious links or files. Preventative measures such as email security, multi-factor authentication and staff awareness can reduce this risk, but no single control can stop every attempt. MDR looks for suspicious activity that may follow a compromised account or device, helping detection and prevention measures work together.

MDR SERVICES · LONDON

MDR as Part of Sereno's Cyber Security Services

MDR is most effective when it forms part of a wider cyber security strategy. It can identify potential threats and support incident response, but it should not be relied on as the only line of defence.

At Sereno, MDR comes as part of our cyber security offering and complements other security measures, including:

  • Endpoint protection
  • Multi-factor authentication and access controls
  • Security updates and patch management
  • Microsoft 365 security
  • Vulnerability checks
  • Staff security awareness training
  • Backup and recovery

Combining these measures with MDR gives businesses a more complete approach to cyber security.

Protect your business against the latest threats with security measures that combine prevention, monitoring and response.

MANAGED DETECTION & RESPONSE · SERENO

How We Deliver Managed Detection and Response (MDR)

At Sereno, MDR is delivered as part of our Managed Security Service, fitting into the wider security measures already protecting your business.

  1. Monitoring for Unusual Activity

    MDR monitors activity across protected accounts, applications and devices to identify behaviour that may indicate a security threat.

  2. Reviewing & Investigating Alerts

    Not every alert means there has been a cyber attack. Alerts are reviewed by human analysts through a Security Operations Centre (SOC) to determine whether suspicious activity represents a genuine threat.

  3. Responding to Confirmed Threats

    When a threat is confirmed, incident response measures are taken to contain it and reduce the potential impact. Depending on the incident, this may include measures such as isolating an affected device or restricting access to a compromised account.

  4. Managing MDR as Part of Wider Cyber Security

    MDR forms one part of Sereno's wider approach to managed security. It is combined with preventative controls and ongoing security management, giving you a more joined-up way to reduce risk and deal with threats when they arise.

Trusted by London Businesses

Google Reviews

70 Google reviews

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  • Dominik

    11 months ago

    We have partnered with Sereno on a range of IT projects and appointed them as our managed IT services provider and the experience has been exceptional from the…

  • Jo Joynes

    a year ago

    Sereno IT are innovative in their approach to IT support. We moved to Sereno IT in Jan 2023 and have not looked back.

  • AJ Shazad

    a year ago

    I have known Sereno (and their previous business) since 2016 as they are the IT solutions providers of our private credit fund with complex operations.

  • Tim Field

    a year ago

    Great company, very efficient with some wonderful individuals supporting

  • Scott Simmons

    a year ago

    We have used Sereno for our IT support since May 2023 and find the team to be quick, informative and clear in terms of describing any work carried out to…

  • Adam Wright

    a year ago

    We've been working with Sereno for 18 months now and have been impressed by their solution oriented approach.

  • MB

    a year ago

    Great service, rapid response time, friendly, professional technicians - couldn't be better. Very glad we switched providers.

  • Daljit Sumal

    a year ago

    Amazing service as always. Had a few queries which were dealt with swiftly and calmly.

CloudTango Reviews
  • “Sereno have been a reliable and valued partner, with a fantastic team of highly responsive and capable technicians, backed by proactive and forward-thinking leadership.”

    John Holmes

    IT Manager, Oikos Storage Ltd

    CloudTango Review

  • “After a couple of challenging years with our previous IT support company, moving to Sereno IT in 2024 has been one of the best business decisions we've made.”

    Joanna Socko

    Franklyn James

    CloudTango Review

  • “IT is no longer a burden or even a part of my work week. I know the team are looked after quickly if they have an issue, and I get all the advice and guidance…”

    Jamie Waldegrave

    COO/CFO, Urban Logistics

    CloudTango Review

  • “The advice we've had from Sereno means we can make informed decisions about what our company actually needs and we know we can implement changes easily.”

    Alice Lees

    Hutton Consulting

    CloudTango Review

  • “Sereno IT provided a solution that perfectly aligned with our needs. Not only did they help us save on costs, but they also ensured our systems are secure and…”

    Nigel Shearsby

    Statons Estate Agents

    CloudTango Review

  • “We've been working with Sereno IT for a year now and continue to be impressed by their forward-thinking approach.”

    Katie Sexton

    Archio Ltd

    CloudTango Review

  • “Sereno are an innovative IT company who make solving your IT issues quick and simple with their vast knowledge.”

    Jo Nauman

    AKT Productions Limited

    CloudTango Review

  • “We have been working with Sereno for around a year and half now, and the support they've provided has been truly invaluable to our business.”

    Fay Allen

    Greencore Homes Ltd

    CloudTango Review

  • 5-star rated on Google and CloudTango

  • 75+

    Companies and 2,300+ people supported

  • 98%

    Client retention since inception, with zero quality-related churn

  • 100%

    Staff retention last year, so you work with the same accountable team

  • Growing

    We helped our clients grow 14% on average last year

CYBERSECURITY & MDR SERVICES · LONDON

Why Choose Sereno IT Support as Your Managed Security Provider?

Sereno combines cyber security expertise with an understanding of how your wider IT environment works. Our Managed Security Services bring MDR together with preventative security measures and ongoing management, treating protection as part of your everyday IT.

  • Certified Cyber Security Expertise

    Sereno is Cyber Essentials Plus certified, demonstrating that our own security controls have been independently assessed. We apply this security-first approach when helping businesses strengthen their protection and reduce cyber risk.

  • Security Technology You Can Rely On

    We work with established cyber security technology providers to deliver proven tools for monitoring and protecting business systems. This gives our clients access to security technology backed by ongoing management and support.

  • Microsoft & Google Expertise

    As a Microsoft Solutions Partner and Google Workspace Partner, Sereno understands the cloud platforms many businesses depend on every day. This expertise supports stronger security across Microsoft 365, Google Workspace and the accounts and endpoint devices connected to them.

  • Service Built Around Your Business

    Sereno adapts its service to your specific business needs rather than taking a one-size-fits-all approach. Our Customer Experience Agreement measures the quality, ownership and communication you receive, with a Customer Experience Score of over 98%.

Give your business stronger protection with security that is managed around your systems, users and day-to-day needs.

Discuss Your Security

Trusted by London Businesses

Sereno supports businesses across a range of industries. Our Google rating and long-term client relationships reflect the level of service businesses can expect when they trust us with their IT and security.

75+

Businesses supported

2,300+

Users supported

Google
5.0

Google rating

CYBERSECURITY & MDR SERVICES · LONDON

Accreditations and Partnerships

  • Microsoft Solutions Partner
  • Google Workspace Partner
  • Cyber Essentials Plus
  • Cloudtango Top 25 UK MSP
  • Cloudtango MSP UK Select 2026
  • IT Nation Evolve

Case studies

Client Success Stories

London businesses come to Sereno when they want IT to feel organised, owned and easier to manage. Real outcomes for real businesses.

  • Hutton Consulting

    Case study · Hutton Consulting

    The IT Relationship Hutton Consulting Was Looking For

    Modernised cloud and identity setup to support hybrid working, with security and strategy from a partner they could finally trust.

    Read the case study
  • Statons Estate Agents offices

    Case study · Statons Estate Agents

    How Statons Transformed Operations with Microsoft 365

    Took ownership of devices, onboarding and security so the operations team could focus on customers, not IT.

    Read the case study
  • Urban Logistics REIT

    Case study · Urban Logistics REIT

    Reliable IT Support for a Listed Property Investment Company

    Built an IT roadmap aligned to growth, with predictable monthly investment, dependable support and clearer reporting.

    Read the case study

Frequently Asked Questions

MDR providers combine advanced technology with human expertise to monitor systems for suspicious activity, investigate alerts and provide threat response when needed. They may also use threat intelligence and proactive threat hunting to identify potential threats that automated tools alone might miss. Unlike basic security tools that mainly focus on prevention, managed detection and response services add ongoing threat detection and response across protected accounts, applications and devices.

No. Sereno is not a standalone managed detection and response provider. Businesses looking for MDR services in London access this capability as part of our Managed Security offering.

This allows MDR to work with other security controls rather than operating as an isolated MDR solution.

MDR can be valuable for businesses that hold sensitive data, rely heavily on cloud systems or do not have their own dedicated security specialists. It can also support an internal IT team that needs additional expertise to monitor, investigate and respond to threats.

Endpoint Detection and Response (EDR) tools focus mainly on detecting and responding to suspicious activity on endpoints such as laptops and desktops. Extended Detection and Response (XDR) collects and combines security information from a wider range of security tools and systems.

MDR is different because it is a managed service. Rather than simply providing EDR tools or another security platform, MDR adds monitoring, investigation and human oversight to help businesses detect and respond to potential threats.

MDR services can help identify activity linked to compromised accounts, malware, suspicious endpoint behaviour and attempted unauthorised access. MDR can identify signs of an attack that other security controls may miss, allowing action to be taken before the incident develops further.

MDR does not prevent every cyber attack on its own. It is most effective when combined with preventative controls such as access management, security updates and endpoint protection.

Yes. Small and medium-sized businesses can be targeted by evolving cyber threats, particularly when they hold valuable customer or business data but do not have dedicated security operations in-house.

A managed approach gives smaller businesses access to security experts and stronger threat detection without having to build a full internal security team. For Sereno clients, MDR is included within a broader Managed Security Service designed to strengthen protection and support business continuity.

Talk to an IT Advisor