Bridewell vs Tesorion
Bridewell is a Microsoft-ecosystem that works with your existing tools. Tesorion is a Services firm that works with your existing tools. Bridewell targets Mid-market and Enterprise organizations; Tesorion serves Mid-market and Enterprise. Bridewell includes 5 attack surfaces in base pricing (Endpoint, Cloud, SaaS, Identity, Network), compared to 4 for Tesorion (Endpoint, Cloud, Identity, Network).
Buyer brief
Bridewell is a Microsoft-ecosystem that works with your existing tools. Tesorion is a Services firm that works with your existing tools. Bridewell targets Mid-market and Enterprise organizations; Tesorion serves Mid-market and Enterprise. Bridewell includes 5 attack surfaces in base pricing (Endpoint, Cloud, SaaS, Identity, Network), compared to 4 for Tesorion (Endpoint, Cloud, Identity, Network).
Bridewell (Microsoft-ecosystem) and Tesorion (Services firm) serve different buyer profiles. Your decision depends on whether you prioritize Bridewell's strong choice for uk/eu critical national infrastructure needing microsoft-native mdr with ncsc/c... or Tesorion's tesorion mdr fits dutch buyers that want local mdr delivered through t-soc and backed by t-cert, ....
At a glance
| FIELD |  |  |
|---|---|---|
| Best fit | Organizations with Microsoft 365 and Azure footprints wanting native Sentinel/Defender XDR managed services | Dutch organisations that want MDR from a Netherlands-based cybersecurity services firm |
| Price | Not published | Custom quote |
| Response authority | 4/6 actions · Configurable | 1/6 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
- Organizations with Microsoft 365 and Azure footprints wanting native Sentinel/Defender XDR managed services
- Price
- Not published
- Response authority
- 4/6 actions · Configurable
- Stack
- Works with existing stack
- Data access
- Full query access
- Warranty
- None listed
- Best fit
- Dutch organisations that want MDR from a Netherlands-based cybersecurity services firm
- Price
- Custom quote
- Response authority
- 1/6 actions · Configurable
- Stack
- Works with existing stack
- Data access
- Reports only
- Warranty
- None listed
›› Detailed comparison
| FIELD | BridewellTECH-AGNOSTIC | TesorionTECH-AGNOSTIC |
|---|---|---|
| ›› Fit | ||
| Target size | Mid-market, Enterprise | Mid-market, Enterprise |
| Sentiment | Positive | Mixed |
| ›› Your stack | ||
| Approach | Works with your tools | Works with your tools |
| EDR integrations | Microsoft Defender for EndpointCustomer choice of EDR (integrated via Sentinel) | SentinelOneCustomer endpoint telemetry |
| SIEM integrations | Microsoft Sentinel | None listed |
| Coverage | EPEndpoint: CoveredCloudCloud: CoveredIDIdentity: CoveredSaaSSaaS: CoveredNetNetwork: CoveredOTOT/IoT: Optional add-on | EPEndpoint: CoveredCloudCloud: CoveredIDIdentity: CoveredSaaSSaaS: LimitedNetNetwork: CoveredOTOT/IoT: Optional add-on |
| ›› Response | ||
| Response type | Active Remediation | Active Remediation |
| Approval policy | Configurable | Configurable |
| Response actions | IsolateContainDisable accountsCustom playbooks | Custom playbooks |
| IR included | Separate | Separate |
| ›› Cost | ||
| Price range | Not published | Not published |
| Minimum seats | None | None |
| Breach warranty | – | – |
| ›› More details | ||
| Requires own agent | No | No |
| Endpoints | ✓ Included | ✓ Included |
| Cloud workloads | ✓ Included | ✓ Included |
| Identity | ✓ Included | ✓ Included |
| SaaS apps | ✓ Included | ~ Limited |
| Network | ✓ Included | ✓ Included |
| OT/ICS | + Optional | + Optional |
| Threat hunting | ✓ Included | ✓ Included |
| Response SLA | Not disclosed | Not disclosed |
| 24/7 coverage | ✓ | ✓ |
| Pricing model | Custom pricing based on environment size, coverage areas, and Microsoft licensing footprint. Offered via Azure Marketplace as managed service. Pricing model not publicly disclosed. | Custom quote. Tesorion does not publish MDR package pricing. |
| Hidden cost warnings | Incident response is NOT included in base MDR, it is a separate 24/7 service. Requires Microsoft Sentinel and Defender XDR licensing (customer cost). OT/ICS coverage requires specialist engagement beyond standard MDR. UK/Europe focus, US expansion underway but limited North American SOC presence historically. I-Tracing merger (May 2025) introduces integration risks during transition period | Public pages do not publish response SLAs or named default response actions.. The public MDR page says mitigation is immediate where possible, but does not specify what Tesorion can do without customer approval.. T-CERT incident response is prominent, but buyers should confirm whether IR hours are included in MDR or sold separately.. Tesorion lists broad coverage across domains, so buyers should confirm which monitored sources are included in base MDR. |
| Data portability | Full | Partial |
| Contract terms | Annual, Multi-year | Custom |
| Channels | EmailPortalPhone | EmailPhone |
| Data access | Full query access | Reports only |
| Dedicated analyst | – | – |
| SOC regions | EuropeNorth America | Europe |
| Onboarding | Less than a week for MDR capabilities deployment | Tesorion says MDR use cases are tailored per organisation and linked to mitigating measures. No standard public onboarding duration was found. |
| Industry focus | EnergyUtilitiesTransportAviationGovernmentFinancial ServicesCritical National Infrastructure (CNI) | Financial ServicesHealthcarePublic SectorManufacturingCritical InfrastructureTechnologyProfessional Services |
| MTTD | Not published | Not published |
| MTTR | Not published | Not published |
| Community view | Limited public reviews due to CNI/government client base where testimonials are restricted. Published case studies from Northern Gas Networks and Manchester Airport Group praise technical depth and organized delivery. No G2/Gartner Peer Insights presence and zero Reddit mentions suggest limited visibility outside UK CNI and public sector markets. Hard to assess independently. | Tesorion has limited MDR-specific public review volume. The public buyer case rests on Dutch delivery, T-SOC operations, XDR and SOAR correlation, threat intelligence and nearby T-CERT incident response. Buyers should validate pricing, response authority, included source scope and whether T-CERT support is included before signing. |
| Compliance | ISO 27001ISO 27701ISO 9001ISO 22301Cyber Essentials PlusCREST SOCCREST CSIRNCSC AssuredISA/IEC 62443GDPRPCI DSS | ISO 27001NEN 7510NIS2DORABIO |
| Certifications | ISO 27001ISO 27701ISO 9001ISO 22301Cyber Essentials PlusCREST SOC (SOC accreditation)CREST CSIR (Cyber Security Incident Response)CREST Intelligence-led Penetration TestingCREST Penetration TestingCREST Vulnerability AssessmentCREST Incident ExercisingNCSC CHECK (penetration testing)NCSC CIR (Cyber Incident Response, Standard Level)NCSC CIE (Cyber Incident Exercising)NCSC Cyber Resilience AuditNCSC Risk Management ConsultancyNCSC Audit and ReviewNCSC Security Architecture ConsultancyMicrosoft Solutions Partner for Security (Cloud Security and Threat Protection specialisms)Microsoft Verified Managed XDR Solution | ISO 27001NEN 7510 |
| Founded | 2013 | 2018 |
| Data retention | Not publicly disclosed. Determined by customer's own Microsoft Sentinel workspace retention settings and contract terms. | Not published as a standard MDR retention period. |
| API available | ✓ | – |
| Website | Visit → | Visit → |
›› FAQ
What is the main difference between Bridewell and Tesorion?
Bridewell is a Microsoft-ecosystem that is technology-agnostic (works with your existing tools). Tesorion is a Services firm that is technology-agnostic (works with your existing tools). Bridewell covers 5 attack surfaces in base pricing vs. 4 for Tesorion.
How do Bridewell and Tesorion differ in response capabilities?
Bridewell supports 4 autonomous actions (account disable, custom playbooks, endpoint isolation, network containment) and approval is configurable. Tesorion supports 1 autonomous actions (custom playbooks) and approval is configurable.
How does Bridewell pricing compare to Tesorion?
Bridewell pricing: Custom-quoted pricing. Tesorion pricing: Not published. Watch for with Bridewell: Incident response is NOT included in base MDR, it is a separate 24/7 service; Requires Microsoft Sentinel and Defender XDR licensing (customer cost). Watch for with Tesorion: Public pages do not publish response SLAs or named default response actions.; The public MDR page says mitigation is immediate where possible, but does not specify what Tesorion can do without customer approval..
Should I choose Bridewell or Tesorion?
Choose Bridewell if: uK and European Critical National Infrastructure organizations (energy, transport, utilities, government) needing NCSC/CREST-assured MDR. Choose Tesorion if: dutch organisations that want MDR from a Netherlands-based cybersecurity services firm. Bridewell is not ideal for organizations requiring multi-vendor, platform-agnostic MDR beyond the Microsoft ecosystem. Tesorion is not ideal for buyers that need public MDR pricing or contractual response SLAs before sales engagement.
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.