UnderDefense MAXI

UnderDefense MAXI is a managed detection and response platform from UnderDefense, a cybersecurity company established in 2017 with offices in New York, Jacksonville, Krakow and Lviv. MAXI pairs a 24/7 human-staffed SOC with an agentic AI layer that UnderDefense says handles most first- and second-line alert triage automatically, correlating signals from a customer's existing endpoint, network, identity, cloud, SaaS and Kubernetes tools rather than requiring UnderDefense's own telemetry agent. UnderDefense publishes a target of around two minutes to triage and containment within 15 minutes, and includes response actions such as host isolation inside the core MDR subscription rather than billing them as a separate incident response retainer, though a dedicated, higher-tier incident response retainer with faster remote or onsite SLAs is sold as a separate add-on for organisations that want it.

MAXI is built to be vendor-agnostic: UnderDefense lists more than 250 integrations covering endpoint tools such as CrowdStrike, SentinelOne and Microsoft Defender, SIEM platforms including Splunk and Microsoft Sentinel, identity providers, and ticketing systems such as ServiceNow and Jira, and positions this against MDR rivals that push customers onto a single proprietary agent. The platform also runs compliance automation with evidence kits for frameworks including SOC 2, ISO 27001, HIPAA, PCI DSS and DORA, and a multi-tenant console that lets a managed security provider run several client environments from one place, with white-labelling for MSPs and MSSPs that want to resell the service under their own brand.

Pricing starts at $11 per endpoint per month for the Standard tier, which UnderDefense publishes as a baseline rate; Enhanced and Professional tiers that add cloud, SaaS, email and managed SIEM detection are quoted based on infrastructure scope (checked September 2026). UnderDefense does offer a free, self-serve entry tier and a 14-day trial of the full platform with no credit card required, which is unusual among MDR providers that typically require a sales call before any hands-on access. MAXI suits an MSP or MSSP that already runs its own EDR, SIEM or cloud security tooling and wants a 24/7 SOC and bundled incident response layered on top without switching agents, and one that needs audited compliance evidence alongside detection. It suits a buyer wanting to compare a very simple published baseline price, or a very small shop wanting a single all-in-one agent rather than an integration-first platform, less well.

UnderDefense MAXI stands out for publishing a baseline starting price and offering a real free, self-serve tier, which suits an MSP that already has EDR or SIEM tooling in place and does not want to rip it out for a single-vendor platform such as CrowdStrike or Arctic Wolf. The response actions and compliance evidence bundled into the core MDR subscription are worth comparing directly against Huntress or Field Effect MDR, which typically price incident response and compliance separately. Because the Enhanced and Professional tiers require custom quotes, get a written quote scoped to your actual endpoint and log volume before committing, and confirm exactly which integrations and compliance frameworks are covered at the tier you would actually buy, not just the baseline $11 rate.