3D illustration of a cyber containment barrier blocking compromised MSP administrative access before threats reach connected customer environments.3D illustration of a cyber containment barrier blocking compromised MSP administrative access before threats reach connected customer environments.

Managed Service Providers

How containment strengthens the service you deliver across client environments

Managed access must remain controllable during an incident

Your clients rely on you because your teams can administer, maintain and recover systems they cannot manage alone. The same authorised reach that makes your service valuable also concentrates responsibility inside your operating model.

During a cyber incident, you need to protect your own environment and prevent one compromised identity, management route or server from carrying harm into a client estate. At the same time, each affected client expects you to preserve service, contain the incident and explain what remains safe to operate.

Containment therefore belongs inside managed service delivery. It gives your teams a way to interrupt active malicious behaviour, keep client environments separated and produce evidence of the action taken before one incident becomes a shared crisis.

Your service concentrates access and responsibility

Many attacks begin with valid credentials, remote access or legitimate administration tools rather than an obviously broken perimeter. Because the activity uses existing authority, it can resemble ordinary service work until the behaviour changes. Multi-factor authentication (MFA) remains essential, but a successful login still needs scrutiny when an attacker can misuse an authenticated session, alter mailbox rules or run an unexpected remote-support tool.

Your control problem is therefore time-sensitive. A route that was legitimate yesterday may be unsafe now, and waiting for complete certainty can give an attacker more opportunity to reach client systems, backups or shared infrastructure. The attacker benefits whenever harmful activity continues to look authorised.

What provider incidents have already done to client operations

A joint CISA advisory explains why MSP exposure differs from an isolated customer incident. Managed services commonly depend on trusted connectivity and privileged access to customer systems, which can allow a compromised provider or management route to become an entry point into several client environments.

Kaseya confirmed that attackers exploited zero-day vulnerabilities in its on-premises VSA product in July 2021, bypassed authentication and executed ransomware on managed endpoints. Approximately 50 Kaseya customers were breached, but the provider model extended the impact to an estimated 800 to 1,500 downstream businesses.

Swedish supermarket chain Coop experienced the operational consequence through its technology supply chain rather than a direct attack against the retailer. Around 700 of its 800 stores had to close when tills and self-service checkouts stopped working. Incident responders reported that all stores had reopened within six days.

A Dutch incident in April 2021 shows the same concentration risk without the same propagation mechanism. Ransomware encrypted a significant part of Managed IT's infrastructure, leaving 96 notary offices unable to work normally or pass deeds. The first offices regained access several days after the attack and the last clients followed later that week. Managed IT's connected off-site backups had also been encrypted, although investigators reported no indication that client data had been stolen.

Neither case means that every MSP incident will spread into every client environment or cause permanent data loss. Together they show why provider resilience cannot be judged only by whether backups exist or whether the original target was the MSP. One event can create simultaneous client interruption, a shared recovery workload and urgent demands for evidence before the full technical picture is available.

Recent reporting from ConnectWise and Huntress shows how provider compromise continues to evolve through abused identities, remote access, RMM tooling, mailbox manipulation and authenticated-session takeover. The lasting issue is concentrated authority: when legitimate provider access begins carrying unsafe behaviour, your teams need a containment boundary before consequences multiply across clients.

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Sources:

CISA - Protecting Against Cyber Threats to Managed Service Providers and their Customers
https://www.cisa.gov/news-events/cybersecurity-advisories/aa22-131a

Kaseya - Incident Overview & Technical Details
https://helpdesk.kaseya.com/hc/en-gb/articles/4403584098961-Incident-Overview-Technical-Details


Kaseya - Kaseya Responds Swiftly to Sophisticated Cyberattack
https://www.kaseya.com/press-release/kaseya-responds-swiftly-to-sophisticated-cyberattack-mitigating-global-disruption-to-customers/


Truesec - Back in Business After the Largest Ransomware Attack of All Time
https://www.truesec.com/cases/back-in-business-after-the-largest-ransomware-attack-of-all-time


NOS - Nearly 100 Notaries Unable to Execute Deeds Following IT Vendor Hack
https://nos.nl/artikel/2377387-bijna-honderd-notarissen-kunnen-geen-akten-passeren-na-hack-bij-ict-leverancier


KNB - Breached: What Now?
https://www.knb.nl/actueel/notariaat-magazine/2021/notariaat-magazine-nr-4-juni-2021/gehackt/


Tweakers - IT Firm Managed IT Encrypted via BitLocker; Ransom Has Been Paid
https://tweakers.net/nieuws/180794/data-ict-bedrijf-managed-it-was-versleuteld-met-bitlocker-en-losgeld-is-betaald.html

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Connectwise - 2026 MSP Threat Report
https://www.connectwise.com/resources/msp-threat-report


Huntress - The Huntress Tragic Quadrant: Beat the Hype on Cyber Tactics Wrecking Businesses
https://www.huntress.com/blog/huntress-tragic-quadrant-cyber-threats

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The tools that make your service efficient can also carry risk

Remote monitoring and management platforms, privileged accounts, support sessions, cloud administration, server access, backup tooling and identity services allow your teams to support many clients efficiently. Attackers value those same routes because access and persistence are already part of routine administration.

When an attacker steals a valid identity or authenticated session, harmful activity may initially resemble ordinary service work. Multi-factor authentication remains essential, but it cannot establish that every action performed after login is still legitimate. An unexpected remote-support tool, altered mailbox rule or abnormal administrative command can carry malicious intent through access that was originally authorised.

The control problem begins when behaviour changes. Waiting for complete certainty can allow one compromised route to reach client systems, backup infrastructure or shared services before your teams can create a reliable boundary.

Your clients will judge the control you retained

Your response team may be tracing identities, sessions, remote tools, server activity, file encryption, cloud synchronisation and backup integrity. An affected client experiences a much simpler reality: work has stopped, information may be exposed or a service can no longer be used with confidence.

The value of your service becomes visible in the quality of the boundary you can create and the evidence you can provide. Clients need facts that relate to their environment, not a generic incident statement covering the entire managed estate.

What your client needs to know
What your service must demonstrate
What your client needs to know
Are our systems or data affected?
What your service must demonstrate
Tenant-specific evidence showing the identities, systems, paths and files involved.
What your client needs to know
Has the incident reached other clients?
What your service must demonstrate
Separation between tenants and confirmation that uncertainty in one environment did not automatically become shared exposure.
What your client needs to know
Can our essential services continue?
What your service must demonstrate
A precise operating boundary showing what was contained and which services remain available.
What your client needs to know
What action did you take?
What your service must demonstrate
A defensible timeline linking detection, containment, verification and communication.

Containment can become part of the service you deliver

Clients already expect essential controls such as endpoint protection, monitoring and backup to be integrated into managed service delivery. Containment can follow the same principle: a defined capability deployed before an incident, rather than an emergency purchase after encryption or destructive activity has already expanded.

The value must be commercially explainable before clients experience the crisis it is designed to limit. The strongest case is not another security product. It is the ability to reduce the blast radius, preserve more usable infrastructure, narrow the work required for recovery and provide client-specific evidence of what your teams contained.

A consistent containment capability can also strengthen your own operating model. Your analysts gain one administration layer for policy, alerting and evidence across managed environments, while each client's deployment and incident record remain separated. That allows you to extend the service without turning every alert into a manually reconstructed client crisis.

MSP value
Operational effect
MSP value
Protect your own service
Operational effect
Reduce the chance that compromised provider access or infrastructure becomes the route into several clients.
MSP value
Strengthen client protection
Operational effect
Add an executable containment capability for the moment existing prevention and detection no longer provide enough control.
MSP value
Operate consistently at scale
Operational effect
Manage client policies, configurations and active alerts centrally while preserving strict tenant separation.
MSP value
Make the response explainable
Operational effect
Produce per-client evidence and timelines that support communication, compliance, insurance and recovery decisions.
The value of your service lies in the ability to change what an active attack reaches next

How our platform supports MSP delivery

Our Ransomware Containment platform creates an operational boundary when illegitimate encryption begins. It monitors supported SMB and NFS file activity and isolates the responsible user or session, helping your teams limit how far encryption can spread without disconnecting every service that still supports your clients.

The platform is designed for multi-tenant administration. Your administrators can manage distinct client policies, configurations and active alerts through one central portal, while client data, event histories and evidence remain separated. Dedicated deployment components inside each client environment inspect local file activity, server sessions or supported virtual infrastructure without requiring software on every user endpoint.

Ransomware Containment can run on a suitable Windows Server or virtual machine. Server Intrusion Protection and Virtual Server Protection are additional features on the same platform: one extends control to malicious use of compromised administrative credentials on supported servers, while the other protects supported VMware and Hyper-V infrastructure against host-level attacks.

RESTful APIs allow the platform to connect with existing SIEM, EDR, NAC and SOC workflows. Per-client incident records and forensic timelines can also support reporting mapped to GDPR, NIS2, DORA and cyber-insurance requirements, reducing the work required to reconstruct what your team observed and how it responded.

Platform capability
Value within your managed service
Platform capability
Ransomware Containment (core platform)
Value within your managed service
Detect and contain active encryption across supported file activity, limiting the scope that investigation and recovery may later have to address.
Platform capability
Multi-tenant administration
Value within your managed service
Manage distinct client policies, configurations and active alerts from one portal without merging client data or incident evidence.
Platform capability
Server Intrusion Protection (additional feature)
Value within your managed service
Detect and terminate malicious use of compromised administrative credentials on supported servers before deeper server access or backup deletion.
Platform capability
Virtual Server Protection (additional feature)
Value within your managed service
Monitor and protect supported VMware and Hyper-V infrastructure against host-level attacks that could affect several workloads at once.
Platform capability
APIs, evidence and reporting
Value within your managed service
Connect containment to existing operational workflows and provide each client with an attributable record of detection, action and outcome.

Containment is already being delivered as a managed service

In July 2026, a fully managed ransomware-containment service was launched in North America, combining ransomware-containment technology with 24/7 security operations, automated containment, investigation, recovery validation and reporting.

The significance for MSPs lies in the delivery model rather than the companies involved. The example demonstrates that containment can be embedded within an established managed-security service instead of remaining a standalone product purchased directly by each end customer.

We work with MSPs to determine how our platform can strengthen their own service: protecting the provider environment, supporting separated client deployments and creating an additional containment capability that the MSP can offer through its existing client relationships.

The precise operating and commercial model must reflect your service portfolio, tenant responsibilities, response authority and support structure. The wider lesson is already clear: containment can become part of managed service delivery before a ransomware incident forces clients to seek it under pressure.

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The platform complements the controls you already manage

Firewalls, endpoint protection, EDR, MFA, monitoring, backup and security awareness remain essential. Our platform does not ask you to replace those controls or undermine the service value they already provide. It adds a containment action for the point at which prevention has been bypassed and malicious activity has begun affecting data, servers or virtual infrastructure.

That distinction matters across a diverse client estate. Coverage is rarely uniform, and some environments include legacy systems, shared storage, virtual workloads or operational dependencies that cannot all be protected in the same way. A complementary containment layer gives your teams another way to interrupt the incident while the existing stack continues to detect, investigate and support recovery.

What your teams need to be able to explain

When several clients need answers at once, improvisation quickly becomes difficult to execute and harder to defend. Your operating model should allow your teams to answer:

  • Which client environment generated the signal, and when did it begin?
  • Which user, session, server or path was involved?
  • What containment action followed, and when did it take effect?
  • Did separation between client environments remain intact?
  • Which services can continue while investigation and recovery progress?
  • What evidence can be shared with the client, insurer, auditor or regulator?

Those answers protect more than the technical response. They support the credibility of your service when clients are deciding whether you remained in control at the moment they needed you most.

Validate the value before you add it to the service

A partnership conversation should begin with observable evidence rather than a commercial assumption. Our resilience assessment runs the same controlled ransomware-encryption scenario with your existing security controls active, first without and then with Ransomware Containment enabled. In approximately 90 minutes, you can compare the spread of encryption inside the agreed test environment and review the evidence produced by the platform.

The assessment is deliberately narrow. It does not simulate data theft, lateral movement, Server Intrusion Protection, Virtual Server Protection or production downtime. We address those capabilities separately.

For an MSP, the assessment can open a wider partnership discussion: how containment fits your technical stack, how tenant separation and reporting support service delivery, which responsibilities remain with your team and how the capability can be introduced to clients as part of a managed security service.

MSPs can request a partnership conversation to determine the appropriate validation route. The standard controlled assessment is available free of charge when either your MSP or the participating client has more than 250 employees.

Validate ransomware containment and explore how it can strengthen your managed service

Further readings