Nomios vs SISA ProACT
Nomios and SISA ProACT are both Services firms that work with your existing tools. Nomios targets SMB, Mid-market, and Enterprise organizations, while SISA ProACT serves Mid-market and Enterprise. Nomios includes 4 attack surfaces in base pricing (Endpoint, Cloud, Identity, Network), compared to 0 for SISA ProACT ().
Buyer brief
Nomios and SISA ProACT are both Services firms that work with your existing tools. Nomios targets SMB, Mid-market, and Enterprise organizations, while SISA ProACT serves Mid-market and Enterprise. Nomios includes 4 attack surfaces in base pricing (Endpoint, Cloud, Identity, Network), compared to 0 for SISA ProACT ().
Nomios offers broader coverage (4 surfaces vs. 0). SISA ProACT may suit teams that need depth over breadth.
At a glance
| FIELD |  |  |
|---|---|---|
| Best fit | European buyers that need EU-hosted MDR data and a local SOC relationship | Regulated organizations that need MDR plus PCI, payment forensics and incident-response depth from the same provider |
| Price | Not published | Custom quote |
| Response authority | 3/6 actions · Configurable | 2/6 actions · Configurable |
| Stack | Works with existing stack | Works with existing stack |
| Data access | Dashboards | Reports only |
| Warranty | None listed | None listed |
- Best fit
- European buyers that need EU-hosted MDR data and a local SOC relationship
- Price
- Not published
- Response authority
- 3/6 actions · Configurable
- Stack
- Works with existing stack
- Data access
- Dashboards
- Warranty
- None listed
- Best fit
- Regulated organizations that need MDR plus PCI, payment forensics and incident-response depth from the same provider
- Price
- Custom quote
- Response authority
- 2/6 actions · Configurable
- Stack
- Works with existing stack
- Data access
- Reports only
- Warranty
- None listed
Detailed comparison
| FIELD | NomiosTECH-AGNOSTIC | SISA ProACTTECH-AGNOSTIC |
|---|---|---|
| Fit | ||
| Target size | SMB, Mid-market, Enterprise | Mid-market, Enterprise |
| Sentiment | Mixed | Mixed |
| Your stack | ||
| Approach | Works with your tools | Works with your tools |
| EDR integrations | Palo Alto Networks Cortex XDRCrowdStrikeMicrosoft Defender for EndpointCustomer EDR through Custom MDR | Customer EDR |
| SIEM integrations | Nomios Sovereign Managed SIEMMicrosoft SentinelSplunkIBM QRadarPalo Alto Networks XSIAM | Customer SIEM |
| Coverage | EPEndpoint: CoveredCloudCloud: CoveredIDIdentity: CoveredSaaSSaaS: LimitedNetNetwork: CoveredOTOT/IoT: Optional add-on | EPEndpoint: LimitedCloudCloud: LimitedIDIdentity: LimitedSaaSSaaS: LimitedNetNetwork: LimitedOTOT/IoT: Not covered |
| Response | ||
| Response type | Active Remediation | Active Remediation |
| Approval policy | Configurable | Configurable |
| Response actions | IsolateContainCustom playbooks | Disable accountsCustom 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 | ~ Limited |
| Cloud workloads | ✓ Included | ~ Limited |
| Identity | ✓ Included | ~ Limited |
| SaaS apps | ~ Limited | ~ Limited |
| Network | ✓ Included | ~ Limited |
| OT/ICS | + Optional | Not offered |
| Threat hunting | ✓ Included | ✓ Included |
| Response SLA | Not disclosed | Not disclosed |
| 24/7 coverage | ✓ | Business hours |
| Pricing model | Tiered Guardian xMDR pricing and custom pricing for tailored MDR. Public materials state Guardian xMDR has Essential, Core, Advanced and Elite tiers, with scoping starting from endpoint count and expanding by coverage needs. Public price amounts are not listed. | Custom quote. SISA does not publish ProACT MDR package pricing. |
| Hidden cost warnings | Nomios says Guardian xMDR has transparent tier-based pricing, but public price amounts are not listed.. Guardian xMDR is built on Cortex XDR, so buyers should price Palo Alto licensing and migration effort if they are not already on that stack.. Coverage outside Cortex XDR's native library may require the Sovereign Managed SIEM extension.. Custom MDR can keep existing tools, but SIEM, EDR and data-retention costs remain part of total cost.. No public breach warranty, trial or fixed response-time SLA was found. | Public pages do not publish MDR pricing, contract minimums or service-credit language.. The service is heavily payment-security oriented, so non-payment buyers should confirm whether use cases fit their environment.. ProACT lists many stack components, including SIEM, EDR, CASB, UEBA, SOAR, threat hunting and dark web monitoring, so buyers should confirm which are included in the base quote.. Response automation is a major part of the pitch, so pre-approved SOAR actions and rollback rules should be documented before go-live.. DFIR and payment forensic services are adjacent SISA services, so buyers should confirm what investigation and response work is included in MDR. |
| Data portability | Partial | Partial |
| Contract terms | Subscription, Custom | Custom, ProACT Agentic SOC, ProACT MXDR, DFIR Retainer Services |
| Channels | EmailPhone | Portal |
| Data access | Dashboards | Reports only |
| Dedicated analyst | – | – |
| SOC regions | Europe | |
| Onboarding | Not published. Guardian xMDR is positioned as structured and fast to deploy; Custom MDR is scoped through direct engagement based on existing tools and required detection engineering. | Not published. SISA says ProACT can use a customized and scalable stack with cloud and on-premise deployment options, but no standard onboarding duration was found. |
| Industry focus | HealthcareManufacturingFinancial ServicesGovernmentRetailTechnology | PaymentsFintechFinancial Services |
| MTTD | Not published | Not published |
| MTTR | Not published | Not published |
| Community view | Nomios has a European infrastructure and security-services footprint, but public MDR-specific peer review volume is limited. The clearest public evidence is from Nomios' own MDR page and Guardian xMDR launch material rather than independent managed-service evaluations. | No meaningful MDR-specific buyer-review signal was found in major English-language review communities during this pass. The public buyer case rests on SISA's payment-security focus, ProACT Agentic SOC, forensic intelligence, 1,000+ customer claim, 40+ country footprint and PCI forensic-investigation credentials. Buyers should validate pricing, SOC delivery model, response authority and non-payment use cases directly. |
| Compliance | ISO 27001SOC 2 Type IIGDPRNIS2DORA | PCI DSSPCI PINPCI 3DSPCI P2PEPCI S3PCI S-SLCPCI MPoCSWIFTGDPR |
| Certifications | ISO 27001SOC 2 Type II | PCI Global Payment Forensic InvestigatorPCI Qualified Security AssessorPCI-recognized laboratory for MPoC security evaluationsPCI GEAR committee member |
| Founded | 2004 | 2006 |
| Data retention | Not published as a fixed MDR retention period. Nomios states Guardian xMDR customer data is hosted within the EU; retention should be confirmed by tier and SIEM scope. | SISA says ProACT supports PCI-compliant cloud deployments and on-premise options for data localization requirements, including custom Kubernetes and GCP environments. No standard public MDR retention period was found. |
| API available | – | – |
| Website | Visit → | Visit → |
FAQ
What is the main difference between Nomios and SISA ProACT?
Nomios is a Services firm that is technology-agnostic (works with your existing tools). SISA ProACT is a Services firm that is technology-agnostic (works with your existing tools). Nomios covers 4 attack surfaces in base pricing vs. 0 for SISA ProACT.
How do Nomios and SISA ProACT differ in response capabilities?
Nomios supports 3 autonomous actions (custom playbooks, endpoint isolation, network containment) and approval is configurable. SISA ProACT supports 2 autonomous actions (account disable, custom playbooks) and approval is configurable.
How does Nomios pricing compare to SISA ProACT?
Nomios pricing: Custom-quoted pricing. SISA ProACT pricing: Not published. Watch for with Nomios: Nomios says Guardian xMDR has transparent tier-based pricing, but public price amounts are not listed.; Guardian xMDR is built on Cortex XDR, so buyers should price Palo Alto licensing and migration effort if they are not already on that stack.. Watch for with SISA ProACT: Public pages do not publish MDR pricing, contract minimums or service-credit language.; The service is heavily payment-security oriented, so non-payment buyers should confirm whether use cases fit their environment..
Should I choose Nomios or SISA ProACT?
Choose Nomios if: european buyers that need EU-hosted MDR data and a local SOC relationship. Choose SISA ProACT if: banks, payment processors, fintechs and payment ecosystem buyers that want MDR informed by forensic-investigation experience. Nomios is not ideal for buyers that need public per-endpoint price amounts before a sales call. SISA ProACT is not ideal for buyers that need public MDR pricing before sales.
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.