Criterion 1
The event that starts the clock
Establish whether the timer begins at log ingestion, at detection rule firing, at alert generation, or at the moment an analyst picks the case up.
SIEM management by response commitment
SIEM Providers With a 15-Minute Response SLA for Security Information and Event Management
The providers below run SIEM management and commit to a 15 minute response target in their service level agreement. That target starts when an alert crosses the severity threshold you agreed on, not when a human analyst opens the case, and the distance between those two clocks is what decides whether a fast number means anything during a live incident.
Why a response target is the hardest SIEM claim to verify
A response commitment is only as good as the event that starts the clock and the action that stops it. Some contracts start on alert generation and stop on notification, which can mean an automated message lands inside the window while nobody has looked at anything yet. Others start on triage and stop on containment, which is a far harder promise to keep. Two providers quoting the same number can be selling work that differs by hours.
SIEM providers with a 15-minute response commitment
Each profile lists the provider's SIEM management scope alongside its stated response target. Read the service level definition in the contract before treating the number as comparable, and ask which severity tiers it applies to.
Sophos
VerifiedBest for: Startups to Enterprise orgs, Retail & E-Commerce, Manufacturing
Sophos MDR delivers managed detection and response built on the Sophos security ecosystem, offering both Sophos-native and multi-vendor environment support for...
Abingdon, UK1000+ employees15 minutes SLA
Managed Detection & Response (MDR)Endpoint ProtectionCloud SecurityIncident Response+8 more
Serves: Startups (1-50), SMB (51-200), Mid-Market (201-1000), Enterprise (1000+)
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360 SOC
Best for: Startups to Mid-Market orgs, Manufacturing, Technology
360 SOC provides AI-driven SOC-as-a-Service, delivering 24/7 threat monitoring, detection, and response at accessible price points for SMBs and MSPs.
Phoenix, AZ51-200 employees15 minutes SLA
Security Operations Center as a Service (SOCaaS)Managed Detection & Response (MDR)SIEM ManagementThreat Intelligence+1 more
Serves: Startups (1-50), SMB (51-200), Mid-Market (201-1000)
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Accenture Security
Best for: Enterprise orgs, Retail & E-Commerce, Manufacturing
Accenture Security provides managed security services as part of its global consulting and technology practice, serving large enterprises with complex, multi-na...
Dublin, Ireland1000+ employees15 minutes SLA
Managed Detection & Response (MDR)Security Operations Center as a Service (SOCaaS)SIEM ManagementVulnerability Management+6 more
Serves: Enterprise (1000+)
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Alert Logic
Best for: SMB to Enterprise orgs, Retail & E-Commerce, Technology
Alert Logic, now part of Fortra, provides managed detection and response with an integrated technology platform that combines SIEM, IDS, vulnerability scanning,...
Houston, TX500-1000 employees15 minutes SLA
Managed Detection & Response (MDR)SIEM ManagementVulnerability ManagementCloud Security+3 more
Serves: SMB (51-200), Mid-Market (201-1000), Enterprise (1000+)
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Arctic Wolf
Best for: SMB to Enterprise orgs, Retail & E-Commerce, Manufacturing
Arctic Wolf delivers security operations as a concierge service, combining its cloud-native platform with a dedicated team of security experts assigned to each...
Eden Prairie, MN1000+ employees15 minutes SLA
Managed Detection & Response (MDR)Security Operations Center as a Service (SOCaaS)SIEM ManagementVulnerability Management+4 more
Serves: SMB (51-200), Mid-Market (201-1000), Enterprise (1000+)
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Armor Defense
Best for: SMB to Enterprise orgs, Government & Public Sector, Technology
Armor Defense is a cloud-native MSSP founded in 2009 in Plano, TX, delivering managed security for cloud workloads with a strong focus on compliance, healthcare...
Plano, TX200-500 employees15 minutes SLA
Managed Detection & Response (MDR)Compliance ManagementVulnerability ManagementIncident Response+3 more
Serves: SMB (51-200), Mid-Market (201-1000), Enterprise (1000+)
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BT Security
Best for: Enterprise orgs, Government & Public Sector, Telecommunications
BT Security is the cybersecurity division of British Telecom, one of the world's largest telecom operators, delivering managed security services to 6,400+ enter...
London, UK1000+ employees15 minutes SLA
Managed Detection & Response (MDR)Security Operations Center as a Service (SOCaaS)SIEM ManagementNetwork Security Monitoring+5 more
Serves: Enterprise (1000+)
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Cybanetix
Best for: Mid-Market to Enterprise orgs, Technology, Legal
Cybanetix is a UK-based managed security services provider delivering SOC operations, threat detection, and cybersecurity consulting to enterprises across Europ...
London, UK51-200 employees15 minutes SLA
Security Operations Center as a Service (SOCaaS)Managed Detection & Response (MDR)Threat IntelligenceVulnerability Management+3 more
Serves: Mid-Market (201-1000), Enterprise (1000+)
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CyberProof
Best for: Mid-Market to Enterprise orgs, Manufacturing, Technology
CyberProof, a UST company, is a global MDR provider founded in 2018 with co-managed SOC services built on the proprietary SeeMo AI platform, serving enterprise...
Aliso Viejo, CA500-1000 employees15 minutes SLA
Managed Detection & Response (MDR)Security Operations Center as a Service (SOCaaS)SIEM ManagementCloud Security+3 more
Serves: Mid-Market (201-1000), Enterprise (1000+)
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Cyderes
Best for: Mid-Market to Enterprise orgs, Manufacturing, Technology
Cyderes is a global MSSP formed from the 2022 merger of Herjavec Group and Fishtech, offering MDR, managed security, identity, and professional services with ne...
Kansas City, MO500-1000 employees15 minutes SLA
Managed Detection & Response (MDR)Security Operations Center as a Service (SOCaaS)SIEM ManagementIdentity & Access Management (IAM)+5 more
Serves: Mid-Market (201-1000), Enterprise (1000+)
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Deepwatch
Best for: SMB to Enterprise orgs, Technology, Retail & E-Commerce
Deepwatch provides managed detection and response with a cloud-native platform and assigned security experts, focusing on fast deployment and high-fidelity thre...
Tampa, FL200-500 employees15 minutes SLA
Managed Detection & Response (MDR)Security Operations Center as a Service (SOCaaS)SIEM ManagementVulnerability Management+3 more
Serves: SMB (51-200), Mid-Market (201-1000), Enterprise (1000+)
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DXC Technology
Best for: Enterprise orgs, Government & Public Sector, Manufacturing
DXC Technology is a Fortune 500 global IT services provider with a comprehensive MSSP practice, named a Leader in IDC MarketScape for MSSPs and Everest Group PE...
Ashburn, VA1000+ employees15 minutes SLA
Managed Detection & Response (MDR)Security Operations Center as a Service (SOCaaS)SIEM ManagementVulnerability Management+6 more
Serves: Enterprise (1000+)
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eSecurity Solutions
Best for: SMB to Mid-Market orgs, Technology, Retail & E-Commerce
eSecurity Solutions provides managed cybersecurity services including SIEM management, SOC operations, and compliance monitoring for organizations across the US...
Irvine, CA51-200 employees15 minutes SLA
Security Operations Center as a Service (SOCaaS)SIEM ManagementManaged Detection & Response (MDR)Vulnerability Management+1 more
Serves: SMB (51-200), Mid-Market (201-1000)
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IBM Security
Best for: Enterprise orgs, Retail & E-Commerce, Manufacturing
IBM Security provides enterprise-grade managed security services backed by the X-Force threat intelligence team and a global network of security operations cent...
Armonk, NY1000+ employees15 minutes SLA
Managed Detection & Response (MDR)Security Operations Center as a Service (SOCaaS)SIEM ManagementVulnerability Management+8 more
Serves: Enterprise (1000+)
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KocSistem
Best for: Mid-Market to Enterprise orgs, Manufacturing, Energy & Utilities
KocSistem is Turkey's leading IT services company and MSSP, providing managed security operations, cloud services, and digital transformation solutions backed b...
Istanbul, Turkey1000+ employees15 minutes SLA
Security Operations Center as a Service (SOCaaS)Managed Detection & Response (MDR)Cloud SecuritySIEM Management+4 more
Serves: Mid-Market (201-1000), Enterprise (1000+)
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Kudelski Security
Best for: Mid-Market to Enterprise orgs, Energy & Utilities, Government & Public Sector
Kudelski Security is a Swiss-American MSSP and MDR leader founded in 2012, ranked in Forrester Wave for MDR and recognized by Gartner for seven consecutive year...
Cheseaux-sur-Lausanne, Switzerland200-500 employees15 minutes SLA
Managed Detection & Response (MDR)Cloud SecurityThreat IntelligenceIncident Response+3 more
Serves: Mid-Market (201-1000), Enterprise (1000+)
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Legato Security
Best for: SMB to Enterprise orgs, Government & Public Sector, Manufacturing
Legato Security provides managed detection and response, SOC-as-a-Service, and compliance-focused security operations for mid-market and enterprise organization...
Salt Lake City, UT51-200 employees15 minutes SLA
Security Operations Center as a Service (SOCaaS)Managed Detection & Response (MDR)SIEM ManagementVulnerability Management+3 more
Serves: SMB (51-200), Mid-Market (201-1000), Enterprise (1000+)
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LevelBlue
Best for: Mid-Market to Enterprise orgs, Government & Public Sector, Technology
LevelBlue is a 2024 independent cybersecurity company formed from AT&T Cybersecurity's managed security business, with 2,500+ employees and one of the world's l...
Dallas, TX1000+ employees15 minutes SLA
Managed Detection & Response (MDR)SIEM ManagementVulnerability ManagementCloud Security+3 more
Serves: Mid-Market (201-1000), Enterprise (1000+)
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Lumifi Cyber
Best for: SMB to Enterprise orgs, Manufacturing, Energy & Utilities
Lumifi Cyber is a Scottsdale-based MDR and MSSP provider with a SOC 2 Type II certified US-based SOC staffed by ex-military and DoD experts, offering the propri...
Scottsdale, AZ200-500 employees15 minutes SLA
Managed Detection & Response (MDR)Security Operations Center as a Service (SOCaaS)Endpoint Detection & Response (EDR)SIEM Management+3 more
Serves: SMB (51-200), Mid-Market (201-1000), Enterprise (1000+)
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Novawatch
Best for: SMB to Mid-Market orgs, Manufacturing, Technology
Novawatch provides managed security services including 24/7 SOC operations, MDR, and compliance management with a focus on delivering enterprise security to mid...
Scottsdale, AZ51-200 employees15 minutes SLA
Security Operations Center as a Service (SOCaaS)Managed Detection & Response (MDR)SIEM ManagementVulnerability Management+3 more
Serves: SMB (51-200), Mid-Market (201-1000)
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NTT Security
Best for: Mid-Market to Enterprise orgs, Retail & E-Commerce, Manufacturing
NTT Security provides managed security services through a global network of SOCs, offering comprehensive threat detection, incident response, and consulting ser...
London, UK1000+ employees15 minutes SLA
Managed Detection & Response (MDR)Security Operations Center as a Service (SOCaaS)SIEM ManagementVulnerability Management+7 more
Serves: Mid-Market (201-1000), Enterprise (1000+)
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Pondurance
Best for: SMB to Mid-Market orgs, Manufacturing, Government & Public Sector
Pondurance is an Indianapolis-based MDR firm founded in 2008 with a US-only SOC model, delivering human-led threat hunting and 24/7 detection and response with...
Indianapolis, IN200-500 employees15 minutes SLA
Managed Detection & Response (MDR)SIEM ManagementVulnerability ManagementThreat Intelligence+3 more
Serves: SMB (51-200), Mid-Market (201-1000)
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Proficio
Best for: Mid-Market to Enterprise orgs, Technology, Retail & E-Commerce
Proficio is the inventor of SOC-as-a-Service, founded in 2010 in Carlsbad, CA, with global SOCs in San Diego, Barcelona, and Singapore delivering 24/7 MDR to en...
Carlsbad, CA200-500 employees15 minutes SLA
Security Operations Center as a Service (SOCaaS)Managed Detection & Response (MDR)SIEM ManagementEndpoint Detection & Response (EDR)+3 more
Serves: Mid-Market (201-1000), Enterprise (1000+)
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Quzara
Best for: SMB to Enterprise orgs, Government & Public Sector, Defense & Aerospace
Quzara provides FedRAMP-authorized managed cybersecurity services to government agencies and contractors through its Cybertorch platform, specializing in cloud...
Vienna, VA51-200 employees15 minutes SLA
Security Operations Center as a Service (SOCaaS)Managed Detection & Response (MDR)Cloud SecurityCompliance Management+2 more
Serves: SMB (51-200), Mid-Market (201-1000), Enterprise (1000+)
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How to test a 15-minute SIEM response commitment
Criterion 2
The action that stops it
Confirm whether the commitment is satisfied by an automated notification, by a call to a named contact, or by an analyst having finished triage and stated what happened.
Criterion 3
Severity tiers in scope
Ask which severity levels carry the target. A commitment that applies only to the top tier says very little about the alert volume you will actually receive.
Criterion 4
Coverage hours behind the number
Check whether the target holds overnight, at weekends and on public holidays, and whether the overnight shift is staffed as deeply as the daytime one.
Criterion 5
Remedy when it is missed
Find out what follows a missed target: service credits, a defined escalation path, a review meeting, or nothing you could actually enforce.
Industries using this service
Financial Services, Healthcare, Government & Public Sector, Technology
Platforms commonly paired with this service
Provider directories for this capability
Microsoft Sentinel MSSP Providers, Managed Detection and Response Providers, Managed Security Service Providers
Related buyer resources
Learn what MSSPs doRelated provider categories
Frequently asked questions
What does a 15-minute SIEM response SLA actually cover?
It commits the provider to a defined first action within fifteen minutes of a qualifying event. The contract decides which event qualifies and which action counts, and those two definitions carry far more weight than the number itself.
Does a faster response target mean stronger detection?
No. Response speed and detection quality are separate properties. A provider can acknowledge a weak alert very quickly, and a tuned detection stack that surfaces fewer but better alerts usually matters more than the acknowledgement clock.
Does the response target still hold overnight?
Not always. Ask whether the commitment applies outside business hours, and whether overnight coverage is handled by the same team, by a follow-the-sun partner, or by an on-call rotation with a different staffing depth.
Should the SLA cover containment as well as notification?
That depends on the authority you are willing to delegate. Containment commitments require the provider to act on your systems, so they need agreed limits, a rollback path, and a named person who can approve action out of hours.