SISA ProACT vs UnderDefense
SISA ProACT is a Services firm that works with your existing tools. UnderDefense is a Pure-play MDR that works with your existing tools. SISA ProACT targets Mid-market and Enterprise organizations; UnderDefense serves Mid-market and Enterprise. SISA ProACT includes 0 attack surfaces in base pricing (), compared to 5 for UnderDefense (Endpoint, Cloud, SaaS, Identity, Network).
Buyer brief
SISA ProACT is a Services firm that works with your existing tools. UnderDefense is a Pure-play MDR that works with your existing tools. SISA ProACT targets Mid-market and Enterprise organizations; UnderDefense serves Mid-market and Enterprise. SISA ProACT includes 0 attack surfaces in base pricing (), compared to 5 for UnderDefense (Endpoint, Cloud, SaaS, Identity, Network).
SISA ProACT (Services firm) and UnderDefense (Pure-play MDR) serve different buyer profiles. Your decision depends on whether you prioritize SISA ProACT's sisa proact fits payment-sector buyers that want mdr tied to forensics, pci expertise and ai-assi... or UnderDefense's works on top of your existing stack and keeps data in your infrastructure.
At a glance
| FIELD |  |  |
|---|---|---|
| Best fit | Regulated organizations that need MDR plus PCI, payment forensics and incident-response depth from the same provider | Mid-market teams with existing EDR/SIEM that want MDR layered on top without ripping and replacing |
| Price | Custom quote | From $11/device/mo; annual MDR contract |
| Response authority | 2/6 actions · Configurable | 6/6 actions · Configurable |
| Stack | Works with existing stack | Works with existing stack |
| Data access | Reports only | Full query access |
| Warranty | None listed | $1,000,000 |
- 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
- Best fit
- Mid-market teams with existing EDR/SIEM that want MDR layered on top without ripping and replacing
- Price
- From $11/device/mo; annual MDR contract
- Response authority
- 6/6 actions · Configurable
- Stack
- Works with existing stack
- Data access
- Full query access
- Warranty
- $1,000,000
Detailed comparison
| FIELD | SISA ProACTTECH-AGNOSTIC | UnderDefenseTECH-AGNOSTIC |
|---|---|---|
| Fit | ||
| Target size | Mid-market, Enterprise | Mid-market, Enterprise |
| Sentiment | Mixed | Positive |
| Your stack | ||
| Approach | Works with your tools | Works with your tools |
| EDR integrations | Customer EDR | CrowdStrikeSentinelOneMicrosoft Defender |
| SIEM integrations | Customer SIEM | SplunkMicrosoft SentinelElastic |
| Coverage | EPEndpoint: LimitedCloudCloud: LimitedIDIdentity: LimitedSaaSSaaS: LimitedNetNetwork: LimitedOTOT/IoT: Not covered | EPEndpoint: CoveredCloudCloud: CoveredIDIdentity: CoveredSaaSSaaS: CoveredNetNetwork: CoveredOTOT/IoT: Optional add-on |
| Response | ||
| Response type | Active Remediation | Active Remediation |
| Approval policy | Configurable | Configurable |
| Response actions | Disable accountsCustom playbooks | IsolateKill processContainDisable accountsQuarantineCustom playbooks |
| IR included | Separate | Separate |
| Cost | ||
| Price range | Not published | Starts at $11/device/month (vendor-published) |
| Minimum seats | None | None |
| Breach warranty | – | $1,000,000 |
| More details | ||
| Requires own agent | No | No |
| Endpoints | ~ Limited | ✓ Included |
| Cloud workloads | ~ Limited | ✓ Included |
| Identity | ~ Limited | ✓ Included |
| SaaS apps | ~ Limited | ✓ Included |
| Network | ~ Limited | ✓ Included |
| OT/ICS | Not offered | + Optional |
| Threat hunting | ✓ Included | ✓ Included |
| Response SLA | Not disclosed | Not disclosed |
| 24/7 coverage | Business hours | ✓ |
| Pricing model | Custom quote. SISA does not publish ProACT MDR package pricing. | Per-device pricing, vendor-agnostic (same rate for all asset types) |
| Hidden cost warnings | 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. | $11/device is a starting price for marketing. Actual cost varies by scope, and annual contract is required.. 3-year contract required for $1M breach warranty. Not available on 1-year deals.. IR retainer is separate from MDR. $0 upfront but billed per-incident, so budget for breach costs on top of subscription.. Custom integrations beyond pre-built connectors may require professional services fees. |
| Data portability | Partial | Full |
| Contract terms | Custom, ProACT Agentic SOC, ProACT MXDR, DFIR Retainer Services | Annual |
| Channels | Portal | SlackTeamsEmailPortalPhone |
| Data access | Reports only | Full query access |
| Dedicated analyst | – | ✓ |
| SOC regions | North AmericaEurope | |
| Onboarding | 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. | 30 days |
| Industry focus | PaymentsFintechFinancial Services | ManufacturingHealthcareFinancial Services |
| MTTD | Not published | Not published |
| MTTR | Not published | Not published |
| Community view | 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. | Gartner Peer Insights 4.9/5 (7 reviews). G2 shows 5/5 but across only 31 total reviews for all products. 66 reviews on Clutch with strong ratings. PeerSpot mindshare is 0.0% in the MDR category. No Reddit or independent practitioner forum discussion found. |
| Compliance | PCI DSSPCI PINPCI 3DSPCI P2PEPCI S3PCI S-SLCPCI MPoCSWIFTGDPR | SOC 2 Type IIISO 27001HIPAAPCI DSS |
| Certifications | PCI Global Payment Forensic InvestigatorPCI Qualified Security AssessorPCI-recognized laboratory for MPoC security evaluationsPCI GEAR committee member | SOC 2 Type IIISO 27001Splunk certificationsGIACOSCP |
| Founded | 2006 | 2017 |
| Data retention | 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. | Determined by customer's existing SIEM. UnderDefense does not store raw logs, data lives in customer infrastructure. |
| API available | – | ✓ |
| Website | Visit → | Visit → |
FAQ
What is the main difference between SISA ProACT and UnderDefense?
SISA ProACT is a Services firm that is technology-agnostic (works with your existing tools). UnderDefense is a Pure-play MDR that is technology-agnostic (works with your existing tools). SISA ProACT covers 0 attack surfaces in base pricing vs. 5 for UnderDefense.
How do SISA ProACT and UnderDefense differ in response capabilities?
SISA ProACT supports 2 autonomous actions (account disable, custom playbooks) and approval is configurable. UnderDefense supports 6 autonomous actions (account disable, custom playbooks, endpoint isolation, file quarantine, network containment, process termination) and approval is configurable.
How does SISA ProACT pricing compare to UnderDefense?
SISA ProACT pricing: Not published. UnderDefense pricing: Starts at $11/device/month (vendor-published). 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.. Watch for with UnderDefense: $11/device is a starting price for marketing. Actual cost varies by scope, and annual contract is required.; 3-year contract required for $1M breach warranty. Not available on 1-year deals..
Should I choose SISA ProACT or UnderDefense?
Choose SISA ProACT if: banks, payment processors, fintechs and payment ecosystem buyers that want MDR informed by forensic-investigation experience. Choose UnderDefense if: mid-market teams with existing EDR/SIEM that want MDR layered on top without ripping and replacing. SISA ProACT is not ideal for buyers that need public MDR pricing before sales. UnderDefense is not ideal for organizations that require independently validated detection metrics (MITRE, Forrester, etc.) before committing.
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.