Critical infrastructure (utilities, energy, transit), in-house corporate security teams running 24/7 ops, and organizations that want assessment-to-incident-to-response on one platform.
Pure-assessment buyers with no operational needs, small consulting firms, anyone who wants modern self-serve onboarding.
Is D3 Security a trustworthy vendor?
- 2025-09-10Strategic emphasis shifting toward cyber SOAR
- 2025-03-22API-first architecture enabled major utility integrations
What 78 reviews actually say
Synthesized from G2, Capterra, Reddit, Trustpilot. Patterns >15% prevalence shown.
Praise patterns
- Unifies assessment + incident + dispatch + guard tour71% →
- 20+ year platform with critical infrastructure trust54% →
- Strong API for engineering-led customers41% ↑
Complaint patterns
- UX functional but not delightful47% →
- Brand awareness lower than Resolver38% →
- Implementation 6–12 weeks31% →
What buyers actually pay
19 anonymized deal disclosures · last updated 2026-04-30
| Company size | Median annual |
|---|---|
| 100–500 employees | $54,000 |
| 500–2000 employees | $142,000 |
Auto-verified certifications
Editorial: Strengths
- Unifies physical assessment with active operations — incident, dispatch, guard tour all share data
- Mature 20+ year platform with strong critical-infrastructure and utilities customer base
- Used by major utilities for site assessments on 30/60-month recurring schedules with automated reminders
- Strong report generation with ability to redact sensitive information for third-party reviews
- Database-of-repeat-offenders pattern: link incidents to entities, surface trends across assessments
- API-first architecture — strong fit for teams with engineering resources to extend the platform
- Customer support is well-rated for technical depth on complex deployments
Editorial: Weaknesses
- Brand awareness is lower than Resolver in physical-security-only contexts
- UX is functional but not a differentiator; not the platform you pick to delight end users
- Pricing is opaque; expect quote ranges aligned with mid-market enterprise GRC
- Heavy feature set means longer learning curve for new users
- Implementation runs 6–12 weeks; not a fast self-serve product
- Recent strategic emphasis on cyber SOAR; physical security feature investment less visible
Key features & integrations
- +Physical security incident management
- +Site assessment with recurring schedules
- +Dispatch and guard tour management
- +Investigation case management
- +Entities database (repeat offenders, persons of interest)
- +Customizable report templates with redaction
- +Real-time dashboards and alerts
- +Integration with VMS, access control, and SIEM platforms
Read our full ranking of Physical Security Assessment Software
D3 Security ranks #5 in our editorial review of 10 physical security assessment software platforms. The deep-dive covers methodology, comparison tables, decision matrix, migration scoring, and FAQs.
Read the full rankingClosest alternatives in Physical Security Assessment Software
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