Managed security services for US companies: round-the-clock detection, response, and reporting on one agreement.
Most American mid-market companies end up with five or six security vendors and no single owner. Managed security services puts SIEM, SOC coverage, endpoint detection, vulnerability work, incident response, and user training behind one accountable team. We build the whole stack on Microsoft Defender XDR, Sentinel, Entra ID, and Purview inside the tenant you already pay for, so nothing new gets installed on your endpoints and nothing new gets licensed. Delivered remotely across every US time zone.
- 24/7SOC monitoring
- 5minP1 alert response
- SentinelSIEM substrate
- ReportedMonthly to leadership
Eight security functions bundled into one service.
24/7 SOC monitoring (Microsoft Sentinel)
Sentinel SIEM ingests logs from Microsoft 365, Azure, endpoints, network, and identity. Detection rules tuned to your environment. A P1 alert triggers a named on-call engineer within 5 minutes. Threat hunting weekly.
Endpoint detection and response (Defender for Endpoint)
Defender XDR deployed across Windows, macOS, Linux, and mobile. Behavioral detection, attack-surface reduction rules, automated investigation and response, threat-and-vulnerability management.
Email security (Defender for Office 365)
Impersonation and anti-phishing policies tuned to your executive names and vendor domains, with safe links and safe attachments active. SPF, DKIM, and DMARC are brought to p=reject in stages so legitimate mail never breaks. Anything a user reports gets investigated on the clock, and the DMARC posture is reviewed quarterly.
Identity protection (Entra ID Premium)
Phishing-resistant MFA on every account, conditional access rules written to your working patterns, and risk policies that act on impossible-travel and leaked-credential signals. Admin roles move to just-in-time elevation through PIM. Sign-in anomalies are watched around the clock, not reviewed weekly.
Vulnerability management
Continuous vulnerability assessment through Defender, patching on a monthly cadence, and critical CVEs handled inside five days of disclosure. Cloud configuration is watched for drift, and the asset inventory is reconciled every month so nothing sits unmanaged.
Incident response
A playbook that exists on paper and has been rehearsed. Critical incidents pull an engineer in immediately, with containment inside the hour, evidence preserved within four, and the written review within five business days. Notification material is prepared in advance so your counsel is not drafting under a state deadline clock.
Security awareness training
Quarterly phishing simulations, role-based micro-training, click-rate trending, audit-ready training records. Data-handling modules aligned to HIPAA and state privacy laws such as CCPA/CPRA where they apply to you.
Compliance and reporting
Monthly KPI report: incidents, SLA compliance, vulnerability posture, patch compliance, training completion. Quarterly business review with a security roadmap. Audit-ready evidence for SOC 2, HIPAA, NIST CSF, CMMC, NYDFS Part 500, and FTC Safeguards programs.
Four reasons US security leaders choose our MSS.
Microsoft-native, no third-party agent sprawl
Defender XDR, Sentinel, Entra, Purview. All native to your existing Microsoft tenant. A single console for SOC analysts, no agent conflicts on endpoints, no separate SIEM licensing. We are a Microsoft CSP and Solutions Partner with 800+ systems under management group-wide.
Written priority-tiered SLA with service credits
Critical alerts get a human in five minutes, high priority in ten, everything else in thirty. Miss those and service credits apply. The numbers sit in the agreement rather than in a sales deck.
Remote-first delivery in your own tenant
Everything runs in your Microsoft tenant under delegated access you can read and revoke. No vendor-hosted black box, no data leaving your subscription, and no dependency on anybody's office being open. Escalation and communication paths are agreed in writing at onboarding.
Compliance-aligned evidence packs
Reports formatted so they answer SOC 2 monitoring criteria, the HIPAA Security Rule's audit and incident requirements, NYDFS Part 500 obligations, and cyber insurance questionnaires. When the auditor or underwriter asks, the answer is an export, not a scramble.
Six profiles where in-house security is unrealistic.
Mid-market businesses (50-500 employees)
Past the point where the IT manager can also be the security team, well short of the headcount a real SOC needs.
Financial services firms
NYDFS Part 500, GLBA, and FTC Safeguards require demonstrable security monitoring; MSS provides the evidence and the operations.
HIPAA-covered healthcare
Protected health information, an HHS breach portal that publishes your name, and clinical systems that cannot wait until Monday.
Multi-location retailers
POS networks, payment infrastructure, customer data. A wide attack surface needs continuous monitoring.
Manufacturers and defense suppliers
Plant networks connected to corporate IT, and CMMC obligations flowing down from primes. MSS extends monitoring to OT segments with specialized detection rules.
Cyber-insurance applicants
Insurers ask for evidence of 24/7 monitoring, EDR, MFA, and tested backup. MSS delivers the operations and the paperwork.
Four security delivery models, four cost-and-effort profiles.
| Feature | GR managed security services | In-house SOC team | Point security tools, no SOC | Alert-forwarding MSSP |
|---|---|---|---|---|
24/7 monitoring | Hard to staff | |||
SIEM (Sentinel or equivalent) | ||||
EDR on every endpoint | Variable | |||
Email security at p=reject DMARC | Rarely | |||
Identity protection (MFA, conditional access) | Partial | |||
IR playbook tested in drills | Rare | Variable | ||
Awareness training as part of service | Add-on | Separate vendor | Limited | |
Audit-ready reporting | Templated | |||
You own the tenant and the data | Often vendor-hosted | |||
Cost model | Custom quote, scoped per engagement | Salaries plus tooling | Tool licenses only | Lowest visible |
Baseline in the first fortnight, full monitoring live by week eight.
- 1
Security baseline assessment
2 weeks
Current state across the eight MSS functions. Gaps prioritized by exploitability. Output: a written baseline with a remediation roadmap, scoped for 8-week onboarding plus ongoing operations.
- 2
Foundation build
3 weeks
The Sentinel workspace goes up, log sources are connected one at a time, and the starting detection set is applied. Defender for Endpoint reaches every managed device, MFA becomes mandatory, conditional access takes effect, and the DMARC record starts its move to p=reject.
- 3
SOC activation and tuning
2 weeks
Operational ownership transfers to the SOC. Rules are tuned against your real traffic so analysts are not drowning in benign alerts. The first weekly threat hunt runs, and the response playbook is written and walked through with your side.
- 4
First tabletop and steady state
1 week, then continuous
Week eight is a tabletop exercise with your leadership team, usually a ransomware scenario, run in real time. After that the engagement settles into its rhythm: monthly metrics, quarterly reviews, restore tests on a schedule, and an annual look at whether the coverage still matches the business.
What CISOs and security leads ask before engaging.
Services that pair with managed security.
Half an hour on a call, a written proposal back inside a week.
The call covers where your security sits today, which regulators or customers are asking questions, where you want to be, and when you need to start. What comes back is a written proposal with the scope, the response commitments, and the onboarding schedule, priced for your environment rather than off a rate card.
Related Services
Explore more solutions that work great with this service
SOC-as-a-Service
24/7 security operations delivered as a service
Learn moreMicrosoft Sentinel SOC Optimization
Sentinel SOC optimization reviews for US organizations: ingestion
Learn moreMicrosoft Security Services
The Microsoft security stack deployed and managed end to end
Learn moreMicrosoft Sentinel
Cloud-native SIEM and threat intelligence
Learn moreMicrosoft Defender
Advanced endpoint and email threat protection
Learn more