Critical Start vs Tesorion
Critical Start is a Pure-play MDR that works with your existing tools. Tesorion is a Services firm that works with your existing tools. Critical Start targets Mid-market and Enterprise organizations; Tesorion serves Mid-market and Enterprise. Critical Start includes 5 attack surfaces in base pricing (Endpoint, Cloud, SaaS, Identity, Network), compared to 4 for Tesorion (Endpoint, Cloud, Identity, Network).
Buyer brief
Critical Start is a Pure-play MDR that works with your existing tools. Tesorion is a Services firm that works with your existing tools. Critical Start targets Mid-market and Enterprise organizations; Tesorion serves Mid-market and Enterprise. Critical Start includes 5 attack surfaces in base pricing (Endpoint, Cloud, SaaS, Identity, Network), compared to 4 for Tesorion (Endpoint, Cloud, Identity, Network).
Critical Start (Pure-play MDR) and Tesorion (Services firm) serve different buyer profiles. Your decision depends on whether you prioritize Critical Start's technology-agnostic mdr with tbr deterministic alert auto-resolution, 100+ integrations, ot/ics s... 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 | Mid-market to large enterprises wanting technology-agnostic MDR that works with their existing security stack | Dutch organisations that want MDR from a Netherlands-based cybersecurity services firm |
| Price | Not published | Custom quote |
| Response authority | 6/6 actions · Configurable | 1/6 actions · Configurable |
| Stack | Works with existing stack | Works with existing stack |
| Data access | Dashboards | Reports only |
| Warranty | None listed | None listed |
- Best fit
- Mid-market to large enterprises wanting technology-agnostic MDR that works with their existing security stack
- Price
- Not published
- Response authority
- 6/6 actions · Configurable
- Stack
- Works with existing stack
- Data access
- Dashboards
- 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 | Critical StartTECH-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 | CrowdStrikeMicrosoft DefenderPalo Alto Cortex SentinelOne | Customer endpoint telemetry SentinelOne |
| SIEM integrations | Microsoft SentinelSplunkSumo Logic | 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 | IsolateKill processContainDisable accountsQuarantineCustom 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 | ≤1 hour | Not disclosed |
| 24/7 coverage | ✓ | ✓ |
| Pricing model | Custom enterprise pricing (annual subscription, tiered by coverage depth) | Custom quote. Tesorion does not publish MDR package pricing. |
| Hidden cost warnings | No public pricing at all, requires sales call for any ballpark. OT/ICS monitoring and vulnerability management are separate purchases on top of base MDR. Full IR/DFIR requires separate CIRT engagement, not included in MDR contract. Annual contract commitment typically required with no published minimum seat count | 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 | Partial | Partial |
| Contract terms | Annual, Multi-year | Custom |
| Channels | EmailPortalPhone | EmailPhone |
| Data access | Dashboards | Reports only |
| Dedicated analyst | ✓ | – |
| SOC regions | North America | Europe |
| Onboarding | 5-10 business days to first detection value (vendor-stated). 4-6 weeks for full enterprise onboarding. Vendor claims 2.66-day median TTFV for Microsoft Sentinel specifically. | Tesorion says MDR use cases are tailored per organisation and linked to mitigating measures. No standard public onboarding duration was found. |
| Industry focus | Financial ServicesHealthcareManufacturingTechnologyGovernmentProfessional ServicesRetailTransportation | Financial ServicesHealthcarePublic SectorManufacturingCritical InfrastructureTechnologyProfessional Services |
| MTTD | Not published | Not published |
| MTTR | 60 minutes or less median time to resolution for ALL alerts regardless of priority | Not published |
| Community view | Gartner Peer Insights 4.8/5 (53 reviews). PeerSpot 9.4/10, skewing large enterprise. Glassdoor 4.3/5 (140 reviews, some concerns about RIFs and turnover). IDC MarketScape Major Player (Emerging MDR, 2024). Praised for TBR noise reduction and SOC analyst accessibility. Criticized for onboarding communication gaps, missing Slack integration and opaque pricing. | 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 | SOC 2 Type IIISO 27001 | ISO 27001NEN 7510NIS2DORABIO |
| Certifications | SOC 2 Type IIISO 27001MISA (Microsoft Intelligent Security Association)Microsoft Solutions Partner for Security | ISO 27001NEN 7510 |
| Founded | 2012 | 2018 |
| Data retention | CORR platform provides API access and data export (CSV/XLSX). Specific retention periods not publicly documented. | Not published as a standard MDR retention period. |
| API available | ✓ | – |
| Website | Visit → | Visit → |
›› FAQ
What is the main difference between Critical Start and Tesorion?
Critical Start is a Pure-play MDR that is technology-agnostic (works with your existing tools). Tesorion is a Services firm that is technology-agnostic (works with your existing tools). SLA commitments differ: Critical Start offers ≤1 hour, Tesorion offers Not disclosed. Critical Start covers 5 attack surfaces in base pricing vs. 4 for Tesorion.
How do Critical Start and Tesorion differ in response capabilities?
Critical Start supports 6 autonomous actions (account disable, custom playbooks, endpoint isolation, file quarantine, network containment, process termination) and approval is configurable. Tesorion supports 1 autonomous actions (custom playbooks) and approval is configurable.
How does Critical Start pricing compare to Tesorion?
Critical Start pricing: Custom-quoted pricing. Tesorion pricing: Not published. Watch for with Critical Start: No public pricing at all, requires sales call for any ballpark; OT/ICS monitoring and vulnerability management are separate purchases on top of base MDR. 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 Critical Start or Tesorion?
Choose Critical Start if: mid-market to large enterprises wanting technology-agnostic MDR that works with their existing security stack. Choose Tesorion if: dutch organisations that want MDR from a Netherlands-based cybersecurity services firm. Critical Start is not ideal for sMBs or budget-conscious organizations, enterprise-focused pricing not published. 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.