// Cybersecurity — Security Operations

Tung Nguyen
Cybersecurity

SOC Operations · Red Team / Blue Team · Threat Mapping

I work where offense meets defense: monitoring real environments, mapping how adversaries actually operate, and testing systems the way an attacker would — then turning every finding into stronger detection. Online, I go by MrMeoMeo.

// 01 — Expertise

What I do

The core disciplines I practice — from the SOC floor to the lab, from packets to adversary tradecraft.

Defend

SOC Operations

Alert triage, incident handling and escalation with a detection-first mindset — keeping signal high and noise low around the clock.

Detect

SIEM & Detection

Log onboarding, correlation rules and dashboards that turn raw events into detections an analyst can actually act on.

Map

Threat Mapping

Mapping real adversary behavior to frameworks like MITRE ATT&CK to prioritize detections and expose coverage gaps before attackers do.

Analyze

Network Traffic Analysis

Packet-level investigation and flow analysis — spotting protocol anomalies, beaconing and lateral movement hiding in plain sight.

Emulate

Red Team–Blue Team Workflows

Adversary emulation that feeds straight back into defense: attack, observe what fired, tune, repeat. Purple teaming in practice.

Build

Security Labs

Hands-on lab environments for attack/defense practice — range building, tooling tests and reproducible scenarios for learning.

// 02 — Focus Areas

Three modes, one loop

Every engagement cycles through the same loop: defend the environment, emulate the adversary, then build the lesson back into the stack.

MODE: DEFEND

Blue Team

Hold the line in live environments — visibility first, then response speed.

  • Monitoring & alert triage
  • Detection engineering & tuning
  • Incident response support
MODE: EMULATE

Red Team

Think and move like the adversary so defenses meet reality, not assumptions.

  • Adversary tradecraft & attack paths
  • Threat mapping against ATT&CK
  • Finding gaps before they're exploited
MODE: BUILD

Cloud & Labs

Where I'm going deeper — securing modern infrastructure and the ranges to practice on.

  • Cloud architecture & cloud security
  • AWS and Google Cloud
  • Lab infrastructure & automation

// 03 — About

About me

I'm Tung Nguyen — a cybersecurity specialist known online as MrMeoMeo. My work sits at the intersection of defense and offense: running security operations, mapping how real adversaries operate, and testing defenses the way an attacker would.

Day to day that means SOC workflows, SIEM-driven detection, threat mapping and network traffic analysis — plus a lot of time in security labs, breaking and fixing things on purpose. My current growth edge is cloud architecture and cloud security across AWS and Google Cloud.

SOC
operations core
RED × BLUE
full-spectrum workflows
ATT&CK
threat mapping
AWS · GCP
cloud security focus

// 04 — Connect

Find me here

Security talk, labs and collaboration — reach me on the channels below.