Surviving the Mythos Era: Richard Bejtlich on the Case for NDR
Richard Bejtlich's new guide advocates for Network Detection and Response (NDR) to combat evolving threats.
Richard Bejtlich's new guide, 'NDR Essentials,' argues that Network Detection and Response (NDR) is crucial for security teams to effectively investigate incidents and counter evolving threats, especially in the 'Mythos Era' where vulnerability discovery outpaces defense. The guide emphasizes moving beyond alerts to gather defensible evidence and advocates for an 'interdiction' strategy focused on disrupting malicious activity within the network perimeter, supported by network telemetry like packet captures and transaction logs.
AI summary of the linked source. Not reviewed by an editor. How this works
Run Corelight?
Get an email when a new story names Corelight, usually within the hour.
Free. Your list stays private and never appears in a subject line. One click stops it. How Vendor Watch worksPrivacy
The lesson from this incident
Full lessonThe 'Mythos Era' described by Richard Bejtlich highlights a critical imbalance: vulnerabilities are being discovered and exploited faster than organizations can defend against them, rendering alert-only security postures insufficient. Relying solely on prevention-based tools leaves security teams without the defensible evidence needed to investigate and respond to incidents effectively. Network Detection and Response (NDR) addresses this gap by capturing rich telemetry — including packet captures and transaction logs — that enables analysts to reconstruct attacker activity within the network. Without this visibility, organizations risk being blind to lateral movement, data exfiltration, and persistent threats operating inside the perimeter. This matters because an undetected attacker dwelling inside a network can cause far greater damage than the initial intrusion.
What helps against this
How we list vendors- Network detection and response (NDR)
Attackers moving between systems inside the network get seen.