N‑able Adlumin MDR vs Critical Start Cortex XDR with MDR: Side-by-Side Comparison (2026)

Short answer

Mid-market IT service providers and SMBs without in-house security teams should choose N‑able Adlumin MDR for its 24/7 managed SOC that actually responds to incidents instead of just alerting you to them. The AI handles autonomous mitigation on over 70% of threats, which means your staff isn't drowning in triage, and the vendor-agnostic integration fits existing tech stacks without rip-and-replace. This isn't the tool for organizations that need deep forensics and incident analysis baked into their own workflows; Adlumin prioritizes detection and fast response over the investigation and recovery depth that mature security teams demand in-house. Mid-market and enterprise teams already committed to Palo Alto Cortex XDR should choose Critical Start's MDR layer if your SOC is understaffed or lacks incident response depth; the service resolves every alert regardless of severity, not just critical ones, which cuts alert fatigue and ensures nothing slips through triage. The bi-directional Cortex XDR integration means analysts work inside your existing platform rather than context-switching to a separate console, and the mobile SOC app actually works for remote containment, not just read-only dashboards. This is a poor fit for organizations without Palo Alto's NGFW and XDR stack already in place; you're buying tightly integrated MDR for a specific platform, not a platform-agnostic detection service.