NetFlow Advantage Use Case

Raw NetFlow Data for External Threat Reconnaissance

Detect probing and staging activity against critical infrastructure before compromise.

Who: Threat hunters, SOC teams, and CTI teams defending critical infrastructure.
What: Scanning, probing, staging, and callback activity aimed at your infrastructure, seen in raw NetFlow.
Why: Every attack starts with reconnaissance. Seeing it early means acting before exploitation.

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Why it matters

Why External Threat Reconnaissance Matters

Cyberattacks always start with network reconnaissance. Threat actors probe, scan, and map your infrastructure, looking for blind spots to penetrate. But instead of alerting you during this reconnaissance stage, traditional security tools don’t ping until attacks are already underway, far too late.

NetFlow data exposes threat reconnaissance in real time, giving you the visibility to detect and disrupt attacks before damage occurs.

Raw NetFlow threat reconnaissance kill chain: adversary activity observed at the reconnaissance stage, before weaponization, delivery, and exploitation

How it works

Detect Threat Actor Recon Before They Strike

Detect Scanning & Mapping Patterns

Identify systematic probing and repeated hits on specific ports, hosts, and network segments as attackers map your environment.

Expose Low-and-Slow Recon

Spot slow, distributed reconnaissance patterns engineered to blend in and evade detection from SIEM and EDR tools.

Identify Staging Activity

See staging infrastructure the minute it comes online, often the earliest sign an attacker is preparing for initial access.

Flag Suspicious Callbacks

Reveal beaconing, callback tests, and abnormal paths between known C2 infrastructure and unknown external IPs.

What it reveals

What NetFlow Reveals That Others Can’t

Global infrastructure vantage

See recon attempts across the worldwide Internet, not just inside your perimeter.

Real-time observations

Get live visibility into network reconnaissance as it’s happening, not after the fact.

Historical context

Amplify investigative context by tracing any recon event over months or years.

Signals

Reconnaissance Signals You Can See in Real Time with NetFlow Monitoring for Cyber Threat Defense

Malicious Scanning Campaigns

Expose large-scale scanning operations targeting specific industries or technologies.

Lateral Staging Attempts

Reveal attackers preparing lateral movement through unusual connections between internal hosts.

Credential Harvesting Activity

Spot the early stages of credential-harvesting operations as they prepare to gather log-in credentials.

High-Value Asset Probes

Identify reconnaissance probes aimed at critical systems and sensitive data stores.

Actor Infrastructure Mapping Cloud Environments

Show how threat actors map cloud services and resources to locate potential attack paths.

Callbacks to Dormant C2 Nodes

Track beaconing and callback activity from endpoints to inactive command-and-control infrastructure.

Comparison

NetFlow Network Reconnaissance with Team Cymru versus SIEM, TIP, CTI

External threat reconnaissance capabilities: Team Cymru raw NetFlow compared with SIEM, TIP, CTI, and DRP tools
Capability	Team Cymru	SIEM	TIP	CTI	DRP
Detects actor recon early	Yes	No	No	No	No
Real-time infrastructure mapping	Yes	No	No	No	No
Sees global activity	Yes	No	No	No	Partial
Exposure to novel adversary infrastructure	Yes	No	Partial	No	No

Supported
Partial
Not supported

Who uses it

How Teams Use NetFlow Recon Data Today

Threat Hunters

Identify and block malicious infrastructure before exploits launch.

SOC Teams

Prioritize alerts based on verified pre-compromise reconnaissance signals.

CTI Teams

Attribute operators and track campaigns during early development.

Trusted In The Most High-Stakes Environments

20+years analyzing global threat actor infrastructures
The OnlyCommercial provider with this depth of visibility into malicious scanning campaigns targeting supply chains, SaaS, and cloud
1,000+Network partners worldwide
RecognizedBy elite security providers for our preemptive detection capabilities

Get Ahead of Threat Actors

Discover how our comprehensive collection of raw NetFlow data reveals network reconnaissance long before attackers invade your perimeter.

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