Operated cybersecurity, not another tool
Managed Security Service Provider and 24/7 Cybersecurity Operations
Level 4 MSSP is a managed security service provider delivering national 24/7 cybersecurity monitoring, managed SOC and SIEM operations, EDR/MDR/XDR, vulnerability management, compliance support, incident escalation, and recovery coordination.
- 24/7 security operations
- Human-led validation and escalation
- Fully managed or co-managed delivery
Managed security, clearly defined
A managed security service provider operates the response process
Security products generate signals. Effective managed security services connect those signals to people, procedures, business context, authorized actions, communication, and recovery. Level 4 helps define what is monitored, who validates a threat, when it is escalated, which response actions are permitted, and what evidence leadership receives.
Managed security service provider, managed security services provider, managed security provider, and MSSP are common category terms. Cybersecurity and cyber security are spelling variants; the practical question is whether the provider owns an operated, measurable security outcome.
Read the managed security provider guide →Connected defense
Managed cybersecurity services across the attack lifecycle
The final scope is based on your environment, risk, internal team, compliance obligations, and response requirements.
SOC & SIEM Operations
Continuous event visibility, human review, threat validation, prioritization, escalation, and response coordination.
Explore SOC and SIEM →EDR, MDR & XDR
Endpoint and extended detection that connects investigation and containment to an accountable managed workflow.
Explore detection and response →Identity, Email & Threat Protection
Layered preventive controls that reduce credential, phishing, malware, and unauthorized-access risk.
Explore threat protection →Vulnerability Management
Find, prioritize, assign, remediate, and verify weaknesses using business and threat context.
Explore vulnerability scanning →Compliance & Evidence
Connect controls, documentation, evidence collection, remediation tracking, and reporting to recurring operations.
Explore compliance support →Recovery & Resilience
Coordinate immutable backup, restoration testing, recovery priorities, and continuity with incident response.
Explore backup and recovery →From signal to action
A security operating model built around accountable decisions
Collect relevant security signals, enrich them with context, and distinguish meaningful activity from noise.
Follow documented severity, contact, containment, approval, and escalation procedures when action is required.
Coordinate restoration, preserve evidence, communicate clearly, and convert lessons into stronger controls and procedures.
Managed SOC services
SOC as a service must connect monitoring to action
A managed security operations center can centralize security signals, investigation, prioritization, escalation, and reporting. The value is not the SOC label alone; it is the documented workflow that turns 24/7 cybersecurity monitoring into an accountable response.
Level 4 combines managed SOC services with SIEM, EDR, MDR, identity, email, vulnerability, compliance, and recovery workflows according to the agreed scope.
Why CISSP-certified expertise matters →National managed security delivery
Remote-first security operations with clearly scoped onsite support
MSSP Converge and Level 4 managed security operations are available nationally through remote monitoring, administration, senior engineering, incident coordination, compliance support, and recurring reporting.
MSSP One is available selectively based on the environment, onsite requirements, service expectations, locations, and engagement scope. Every agreement documents response authority, customer responsibilities, travel or local-resource requirements, exclusions, and escalation paths before service begins.
Two operating models
Choose complete ownership or extend your internal team
Both models connect to the same Level 4 security, compliance, cloud, recovery, and senior engineering capabilities.
Fully managed IT & cybersecurity
MSSP One
Level 4 takes primary responsibility for daily IT operations and cybersecurity through one accountable service.
- Managed IT operations
- Security embedded in support
- One escalation and reporting model
Co-managed cybersecurity
MSSP Converge
Internal IT retains daily ownership while Level 4 adds managed security operations and specialist depth.
- Works alongside internal IT
- 24/7 monitoring and escalation
- Security and compliance expertise
Evidence before promises
What to require from a managed security provider
Monitoring sources, service hours, exclusions, approval boundaries, response authority, and customer responsibilities.
Alert validation, after-hours escalation, incident communication, containment, recovery, and evidence preservation.
Operational trends, unresolved risk, vulnerability remediation, control evidence, incidents, and improvement priorities.
Customer experience
See managed IT and security in practice
These published client stories describe individual engagements. Their scope is not a promise that every service is included in every plan.
Star Nursing
Star Nursing relies on Level 4 for MSSP One services across a mobile healthcare workforce. Level 4 hosts and supports a VDI environment capable of serving more than 200 users, allowing staff to work from personal devices while keeping applications, access, monitoring, and healthcare-focused safeguards centrally managed.
Read the Star Nursing case study →Laborers Local 185
Laborers Local 185 uses the complete MSSP One service with its server environment hosted in the Level 4 private cloud. Level 4 manages the core infrastructure, MTP membership system, connectivity, communications, Microsoft 365, security operations, recovery, workforce training, and strategic technology guidance.
Read the Laborers Local 185 case study →Express Sewer & Drain
For more than a decade, Express Sewer & Drain has used Level 4 across managed IT, cybersecurity, telecom, ISP services, private cloud, and strategic CIO/CISO guidance. The relationship reduces handoffs and gives a field-service business one accountable technology partner.
Read the Express Sewer & Drain case study →Pricing and responsibilities
Compare the scope, not just the monthly price
Compare covered users and systems, monitoring sources, service hours, response authority, reporting, customer responsibilities, and exclusions. Security monitoring does not automatically include unlimited help desk, onsite response, or project labor.
DR, hosted VoIP, private cloud, and ISP or telecom brokerage are separately scoped modules. The Service Order defines the services and quantities included in your engagement.
Review plans, scope, and agreement information →Frequently asked questions
Managed security service provider FAQ
How is managed security service provider pricing determined?
Pricing depends on the users, endpoints, infrastructure, monitoring sources, service tier, response responsibilities, and optional modules in scope. MSSP One and MSSP Converge use different responsibility models. The Service Order defines quantities, fees, exclusions, and any separately scoped project or onsite work.
Does 24/7 security monitoring include unlimited onsite support?
No. Security monitoring hours do not by themselves define help desk hours, onsite availability, or project labor. Those responsibilities, escalation paths, and response commitments are documented in the service agreement.
Do managed security services guarantee compliance or recovery?
No. Technical controls, evidence, and recovery planning can support agreed requirements, but do not guarantee certification, legal compliance, an audit result, or a recovery outcome. Scope, customer responsibilities, dependencies, and any contractual commitments must be reviewed for the specific engagement.
What are managed security services?
Managed security services are ongoing cybersecurity operations delivered by an accountable provider. Scope can include 24/7 monitoring, SOC and SIEM operations, EDR, MDR and XDR, identity and email protection, vulnerability management, compliance support, incident escalation, and recovery coordination.
Is a managed security services provider the same as an MSSP?
Yes. Managed security service provider, managed security services provider, managed security provider, and MSSP are common names for the category. Buyers should compare the actual responsibilities, response authority, evidence, and service scope rather than relying on the label.
What does Level 4 do as a managed security service provider?
Level 4 connects security monitoring, managed SOC and SIEM operations, endpoint detection and response, identity and email protection, vulnerability management, compliance support, incident escalation, and recovery coordination. The exact responsibility model is documented for each engagement.
How is an MSSP different from an MSP?
An MSP generally focuses on user support and IT operations. An MSSP focuses on ongoing cybersecurity operations, threat monitoring, investigation, response, and risk reduction. Level 4 can combine both disciplines through MSSP One or work alongside internal IT through MSSP Converge.
Is buying security software the same as using an MSSP?
No. Security software creates telemetry, alerts, and controls. An MSSP supplies the people, procedures, escalation paths, response authority, documentation, reporting, and continuing improvement needed to operate those tools as a service.
Does Level 4 provide 24/7 cybersecurity monitoring?
Level 4 can provide continuous security monitoring with human-led validation, prioritization, escalation, and response coordination. The exact monitoring sources, response actions, contacts, and service responsibilities are documented for each engagement.
What happens when a security event is detected?
The response follows the agreed workflow: validate the signal, establish severity and business context, document the event, notify the appropriate contacts, take authorized containment or response actions, coordinate recovery when needed, and preserve useful evidence.
Can Level 4 work with our internal IT team?
Yes. MSSP Converge is designed for organizations retaining internal IT ownership while adding managed security operations, senior engineering, compliance support, incident coordination, and specialized capacity.
Can Level 4 manage both IT and cybersecurity?
Yes. MSSP One combines fully managed IT operations and cybersecurity under one accountable team, connecting user support, infrastructure, monitoring, cloud, compliance, backup, recovery, and ongoing improvement.
Which compliance requirements can managed security services support?
Level 4 can help align technical operations and evidence with applicable obligations such as NIST, HIPAA, CMMC, SOC 2, PCI DSS, CJIS, and cyber-insurance requirements. Compliance scope and customer responsibilities must be defined for the organization.
Can Level 4 provide managed security services nationwide?
Yes. MSSP Converge and managed security operations are available nationally through remote monitoring, management, engineering, and response coordination. MSSP One is available selectively based on the environment, onsite requirements, and engagement scope.
Why does CISSP expertise matter when evaluating an MSSP?
CISSP certification provides evidence of broad experience across eight security domains and an ongoing professional-education obligation. Certification does not replace operational proof, but it is a useful signal when combined with clear scope, mature workflows, engineering depth, and accountable service delivery.
What should we ask when evaluating a managed security provider?
Ask what is monitored, who validates alerts, what response authority is included, how after-hours escalation works, how incidents and recovery are coordinated, what is excluded, what evidence and reporting you receive, and who owns every unresolved responsibility.
Find the gaps
Connect security tools to accountable operations
Start with your current controls, alerts, staffing, compliance obligations, incident plan, and recovery priorities.