UnderDefense vs Arctic Wolf: MDR comparison 2026
UnderDefense and Arctic Wolf are both Pure-play MDRs that work with your existing tools. UnderDefense targets Mid-market and Enterprise organizations, while Arctic Wolf serves Mid-market and Enterprise. UnderDefense includes 5 attack surfaces in base pricing (Endpoint, Cloud, SaaS, Identity, Network), compared to 3 for Arctic Wolf (Endpoint, Identity, Network).
Key differences at a glance
Full comparison
Which should you choose?
Choose UnderDefense if:
- •Mid-market teams with existing EDR/SIEM that want MDR layered on top without ripping and replacing
- •Budget-conscious buyers who value transparent per-device pricing and full data ownership on exit
- •Organizations comfortable with a smaller, newer vendor in exchange for flexibility and no lock-in
- •You need Cloud and SaaS coverage included in base pricing
- •You want direct Slack integration with your SOC
Choose Arctic Wolf if:
- •Mid-market organizations without a dedicated SOC that want a named security team, not just a monitoring service
- •IT teams managing multiple security tools that want a single pane of glass without replacing their existing stack
- •Organizations that value the industry's largest breach warranty ($3M) and compliance-aligned security reviews
Bottom line: UnderDefense offers broader coverage (5 surfaces vs. 3). Arctic Wolf may suit teams that need depth over breadth.
Frequently asked questions
What is the main difference between UnderDefense and Arctic Wolf?
UnderDefense is a Pure-play MDR that is technology-agnostic (works with your existing tools). Arctic Wolf is a Pure-play MDR that is technology-agnostic (works with your existing tools). SLA commitments differ: UnderDefense offers Not disclosed, Arctic Wolf offers ≤1 hour. UnderDefense covers 5 attack surfaces in base pricing vs. 3 for Arctic Wolf.
How do UnderDefense and Arctic Wolf differ in response capabilities?
UnderDefense supports 6 autonomous actions (endpoint isolation, process termination, network containment, account disable, file quarantine, custom playbooks) and approval is configurable. Arctic Wolf supports 3 autonomous actions (endpoint isolation, network containment, account disable) and approval is configurable.
How does UnderDefense pricing compare to Arctic Wolf?
UnderDefense pricing: Starts at $11/device/month (vendor-published). Arctic Wolf pricing: MDR Basic starts at $44,000/year for up to 100 users (AWS Marketplace). Median buyer-reported deal is $96,340/year based on 17 purchases (Vendr). Range: $29,176 to $319,984/year depending on scope.. 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.. Watch for with Arctic Wolf: Remediation is guided, not performed on your behalf. May need a separate IR retainer for hands-on incident response.; Normalized data and threat feeds are not directly accessible. You get dashboards and reports, not raw data..
Should I choose UnderDefense or Arctic Wolf?
Choose UnderDefense if: mid-market teams with existing EDR/SIEM that want MDR layered on top without ripping and replacing. Choose Arctic Wolf if: mid-market organizations without a dedicated SOC that want a named security team, not just a monitoring service. UnderDefense is not ideal for organizations that require independently validated detection metrics (MITRE, Forrester, etc.) before committing. Arctic Wolf is not ideal for security teams that want direct access to raw telemetry, custom detection engineering, or SIEM query capabilities.