The bottom line: MDR alone detects attacks but does not stop data encryption within the required millisecond window – automated file-level containment becomes a necessary architectural complement.
Managed Detection and Response provides visibility but does not close the critical response gap between detection and stopping an ongoing encryption process. Automated containment at the file system level becomes necessary to act within a timeframe of minutes.
Modern ransomware attacks unfold with levels of automation that overwhelm human reaction cycles. Between the start of an encryption routine and the compromise of critical file servers, often only minutes elapse. However, MDR models follow sequential processes: event detection, SOC analysis, criticality assessment, customer notification. Even with excellent response times, verification and communication create delays during which encryption proceeds unimpeded.
The core problem lies in the assumption that detected threats are automatically neutralized threats. A valid detection is not, however, technical protection against the physical encryption process. For IT decision-makers, this raises an operational question: Is the attack stopped during its execution or merely documented during its impact?
Specialized containment solutions close this gap through autonomous isolation at data interfaces. They monitor behavior at the file system level and automatically interrupt any process that manipulates files at unusual frequencies. The compromised entity is isolated from the network within milliseconds – without detour through human approval processes. This should be understood not as competition to MDR but as its necessary operational implementation.
In the context of compliance requirements such as the NIS2 Directive, demonstrable operational capability becomes the central criterion. Organizations must be able to prove that they can actively stop the spread of an attack. Backups only address recovery after damage has already occurred, not its prevention. An MDR architecture supplemented by containment shifts the security focus from pure prevention to proactive damage limitation.
Source: www.it-daily.net · Published June 2, 2026
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