Quorum Cyber vs Thales (S21sec)
Quorum Cyber is a Microsoft-ecosystem that works with your existing tools. Thales (S21sec) is a Services firm that works with your existing tools. Quorum Cyber targets SMB, Mid-market, and Enterprise organizations; Thales (S21sec) serves Enterprise. Quorum Cyber includes 4 attack surfaces in base pricing (Endpoint, Cloud, SaaS, Identity), compared to 2 for Thales (S21sec) (Network, OT/ICS).
Buyer brief
Quorum Cyber is a Microsoft-ecosystem that works with your existing tools. Thales (S21sec) is a Services firm that works with your existing tools. Quorum Cyber targets SMB, Mid-market, and Enterprise organizations; Thales (S21sec) serves Enterprise. Quorum Cyber includes 4 attack surfaces in base pricing (Endpoint, Cloud, SaaS, Identity), compared to 2 for Thales (S21sec) (Network, OT/ICS).
Quorum Cyber (Microsoft-ecosystem) and Thales (S21sec) (Services firm) serve different buyer profiles. Your decision depends on whether you prioritize Quorum Cyber's the strongest microsoft-native mdr option with a tiered model spanning smb to enterprise, backed ... or Thales (S21sec)'s thales/s21sec is strongest for complex, regulated and critical-sector environments that value glo....
At a glance
| FIELD |  |  |
|---|---|---|
| Best fit | SMBs needing affordable 24/7 MDR via Clarity Defend, with a growth path to enterprise-grade Protect tier | Critical infrastructure and public-sector buyers that need Thales/S21sec regional cyber detection and response |
| Price | Custom quote | Custom quote |
| Response authority | 6/6 actions · Configurable | 2/6 actions · Configurable |
| Stack | Works with existing stack | Works with existing stack |
| Data access | Full query access | Reports only |
| Warranty | None listed | None listed |
- Best fit
- SMBs needing affordable 24/7 MDR via Clarity Defend, with a growth path to enterprise-grade Protect tier
- Price
- Custom quote
- Response authority
- 6/6 actions · Configurable
- Stack
- Works with existing stack
- Data access
- Full query access
- Warranty
- None listed
- Best fit
- Critical infrastructure and public-sector buyers that need Thales/S21sec regional cyber detection and response
- Price
- Custom quote
- Response authority
- 2/6 actions · Configurable
- Stack
- Works with existing stack
- Data access
- Reports only
- Warranty
- None listed
Detailed comparison
| FIELD | Quorum CyberTECH-AGNOSTIC | Thales (S21sec)TECH-AGNOSTIC |
|---|---|---|
| Fit | ||
| Target size | SMB, Mid-market, Enterprise | Enterprise |
| Sentiment | Positive | Mixed |
| Your stack | ||
| Approach | Works with your tools | Works with your tools |
| EDR integrations | Microsoft Defender | Customer endpoint security tools |
| SIEM integrations | Microsoft Sentinel | Customer SIEM platformsThales SOC tooling |
| Coverage | EPEndpoint: CoveredCloudCloud: CoveredIDIdentity: CoveredSaaSSaaS: CoveredNetNetwork: LimitedOTOT/IoT: Optional add-on | EPEndpoint: LimitedCloudCloud: LimitedIDIdentity: LimitedSaaSSaaS: LimitedNetNetwork: CoveredOTOT/IoT: Covered |
| Response | ||
| Response type | Active Remediation | Active Remediation |
| Approval policy | Configurable | Configurable |
| Response actions | IsolateKill processContainDisable accountsQuarantineCustom playbooks | ContainCustom playbooks |
| IR included | Separate | ✓ Included |
| Cost | ||
| Price range | Not published. Contact for custom quote. | Not published |
| Minimum seats | None | None |
| Breach warranty | – | – |
| More details | ||
| Requires own agent | No | No |
| Endpoints | ✓ Included | ~ Limited |
| Cloud workloads | ✓ Included | ~ Limited |
| Identity | ✓ Included | ~ Limited |
| SaaS apps | ✓ Included | ~ Limited |
| Network | ~ Limited | ✓ Included |
| OT/ICS | + Optional | ✓ Included |
| Threat hunting | ✓ Included | ✓ Included |
| Response SLA | Not disclosed | Not disclosed |
| 24/7 coverage | ✓ | ✓ |
| Pricing model | Not published. Described as 'flexible subscription model' with pricing based on environment size and risk profile. | Custom quote for Thales Cyber Detection and Response, Managed Security Services, SOC and MDR. Public prices are not published. |
| Hidden cost warnings | Requires Microsoft licensing (E3/E5 or standalone Defender licenses) as a prerequisite. These costs are separate and can be significant.. Microsoft Sentinel consumption costs are usage-based and billed separately by Microsoft. Data ingestion charges can spike unpredictably.. Identity coverage (ITDR) and data security (Clarity Data) are separate services at lower tiers. AWS and GCP coverage only available in Clarity Protect (top tier) | The current S21sec domain routes to Thales-branded services, so buyers wanting legacy S21sec-specific delivery should confirm contracting entity, SOC location and delivery team.. Public pages do not publish prices, minimum terms, service credits, MTTD/MTTR or formal MDR SLAs.. Thales offers a broad cybersecurity services portfolio; buyers should separate base MDR scope from CTI, DRPS, DFIR, CERT, ICS monitoring and advisory services.. Named endpoint, identity and cloud containment actions are not public and should be confirmed tool by tool.. Data retention, raw log access, offboarding and detection-content export rights are not described publicly. |
| Data portability | Full | Partial |
| Contract terms | Annual | Custom cyber detection and response engagement, Managed Security Services, SOC and MDR, Critical-infrastructure cybersecurity services |
| Channels | PortalEmailPhone | EmailPhonePortal |
| Data access | Full query access | Reports only |
| Dedicated analyst | – | – |
| SOC regions | EuropeNorth America | EuropeMEAAPAC |
| Onboarding | Not published | Not published. Thales describes customer-centric service roadmaps and selecting/deploying detection and response technologies, but no standard MDR onboarding timeline. |
| Industry focus | Financial ServicesEducationPublic SectorManufacturingProfessional Services | Critical InfrastructureGovernmentDefenseEnergyManufacturingAviationSpaceFinancial ServicesTelecommunicationsHealthcareTransportationAutomotiveUtilitiesMaritime |
| MTTD | Not published | Not published |
| MTTR | Not published | Not published |
| Community view | Named in the Gartner Market Guide for MDR as Representative Vendor (2024, 2025). Microsoft Security MSSP of the Year 2025. First UK Microsoft Verified MXDR provider. Very limited independent review data: no ratings on G2, PeerSpot, or Gartner Peer Insights with sufficient reviews. Zero Reddit presence. | The current public evidence is strong for Thales-branded global SOC, MDR, CTI, DFIR and critical-infrastructure detection and response, but weak for S21sec as a standalone public MDR brand. Buyers should validate current delivery model, SOC location, response authority, pricing and whether the contract is with Thales/S21sec in the relevant country. |
| Compliance | SOC 2 Type IIISO 27001Cyber Essentials | DORATIBER-EUPCI DSSEASA Part-ISEASAICAOUNECE |
| Certifications | SOC 2 Type IIISO 27001 (UKAS-level audit)CREST (Vulnerability Assessment, Pen Testing, CSIR)Cyber EssentialsMicrosoft Verified MXDR SolutionMicrosoft Solutions Partner for SecurityMicrosoft Security MSSP of the Year 2025Gartner Market Guide for MDR Representative Vendor (2024, 2025) | 8 threat intelligence and AI-driven SOCs around the worldSOCs in France, Morocco, the Netherlands, Belgium and Luxembourg, Portugal and Spain, and New Zealand and Australia |
| Founded | 2016 | – |
| Data retention | Data resides in customer's own Microsoft Sentinel instance / Azure tenant. Retention governed by customer's Azure configuration. | Not published. Public pages do not describe default log retention, raw log access, storage tiers or export terms for Thales SOC and MDR. |
| API available | – | – |
| Website | Visit → | Visit → |
FAQ
What is the main difference between Quorum Cyber and Thales (S21sec)?
Quorum Cyber is a Microsoft-ecosystem that is technology-agnostic (works with your existing tools). Thales (S21sec) is a Services firm that is technology-agnostic (works with your existing tools). Quorum Cyber covers 4 attack surfaces in base pricing vs. 2 for Thales (S21sec).
How do Quorum Cyber and Thales (S21sec) differ in response capabilities?
Quorum Cyber supports 6 autonomous actions (account disable, custom playbooks, endpoint isolation, file quarantine, network containment, process termination) and approval is configurable. Thales (S21sec) supports 2 autonomous actions (custom playbooks, network containment) and approval is configurable. Incident response is not included with Quorum Cyber and included with Thales (S21sec).
How does Quorum Cyber pricing compare to Thales (S21sec)?
Quorum Cyber pricing: Not published. Contact for custom quote.. Thales (S21sec) pricing: Not published. Watch for with Quorum Cyber: Requires Microsoft licensing (E3/E5 or standalone Defender licenses) as a prerequisite. These costs are separate and can be significant.; Microsoft Sentinel consumption costs are usage-based and billed separately by Microsoft. Data ingestion charges can spike unpredictably.. Watch for with Thales (S21sec): The current S21sec domain routes to Thales-branded services, so buyers wanting legacy S21sec-specific delivery should confirm contracting entity, SOC location and delivery team.; Public pages do not publish prices, minimum terms, service credits, MTTD/MTTR or formal MDR SLAs..
Should I choose Quorum Cyber or Thales (S21sec)?
Choose Quorum Cyber if: microsoft-committed organizations (E3/E5) wanting MDR built natively on Sentinel and Defender with data staying in their own Azure tenant. Choose Thales (S21sec) if: critical infrastructure and public-sector buyers that need Thales/S21sec regional cyber detection and response. Quorum Cyber is not ideal for organizations running CrowdStrike, SentinelOne, or any non-Microsoft primary EDR. Quorum Cyber is Microsoft-only.. Thales (S21sec) is not ideal for buyers that need a standalone legacy S21sec-branded MDR package.
Daylight Security
AI-native MDR for buyers comparing active remediation across endpoint, cloud, identity, and SaaS. Daylight works with existing EDR/SIEM stacks and uses ChatOps-native collaboration, so it can be a useful third reference point in this comparison.