MDR Is Failing: 60% of Alerts Unreviewed as AI Attacks Outpace Defenders

For the past decade, Managed Detection and Response (MDR) filled a critical gap in enterprise security by providing outsourced 24/7 alert triage for teams that couldn't staff round-the-clock operations. But that model is breaking down. Attackers are now leveraging AI to generate convincing phishing campaigns at scale, automate reconnaissance, and produce malware variants that easily bypass signature-based detection, while the attack surface has simultaneously ballooned across endpoint, cloud, identity, and network layers. Traditional MDR services, still built around human analysts triaging queued alerts, cannot keep pace with the volume or the velocity of modern threats.

The numbers are stark. Across the industry, roughly 60% of security alerts go unreviewed entirely, a structural limitation rather than a performance failure. Human teams, whether in-house or outsourced, simply cannot process the alert volume generated by modern enterprise environments, so they prioritize P1s and P2s while P3s and P4s accumulate untouched. Analysis of 25 million alerts across global enterprises in 2025 found that nearly 1% of real threats originate in low-severity and informational alerts. In an enterprise generating 450,000 alerts annually, that translates to approximately 54 real incidents per year, roughly one per week, hiding in a deprioritized queue that no one is monitoring. These aren't theoretical breaches; they are actively occurring in organizations that believe they have full coverage.

Even alerts that do get reviewed suffer from inconsistent investigation quality, bounded by analyst experience, queue depth, time of day, and staffing levels. A P1 alert at 3 a.m. receives a fundamentally different investigation than the same alert at 10 a.m. Shallow triage causes threats to be classified as noise, and inconsistent follow-through allows early-stage lateral movement to blend in with routine behavior, giving attackers persistent access. Security leaders should consider whether their organization has outgrown its current MDR contract, especially as AI-generated threats compress attacker dwell time and demand faster, more consistent response. Start by auditing your own exposure: verify whether your credentials have appeared in known incidents with the email breach checker, run a privacy checkup to identify misconfigurations across your public-facing assets, and use a port scanner to confirm no unexpected services are exposed to the internet.