Medium

George Chen

Featured Book

CyBasset The Hound

CyBasset The Hound

Introduce cyber awareness to your child

2025

Stories

George Chen

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May 20

CVE-2026-5511 — Improper Input Validation on TP-Link’s Archer AX72

via Diagnostic Interface

CVE-2026-5511 — Improper Input Validation on TP-Link’s Archer AX72

George Chen

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Apr 8

Measuring What We’re Missing

In my last article, I argued that most cyber metrics tell us how busy we are, not how effective we are. That piece focused on the gap. This…

Measuring What We’re Missing

George Chen

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Mar 26

Vulnerability Management as a Feedback System

A vulnerability gets detected. A ticket is created. A patch is applied. The dashboard improves.

Vulnerability Management as a Feedback System

George Chen

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Mar 8

Your SOC Is Measuring Efficiency, Not Effectiveness

This may sound obvious, yet many cyber organizations focus heavily on measuring:

Your SOC Is Measuring Efficiency, Not Effectiveness

George Chen

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Mar 4

Reactive ≥ Proactive

An unpopular security opinion, and an intentionally provocative title.

Reactive ≥ Proactive

George Chen

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Dec 21, 2025

Compromised LinkedIn Account

First things first, report compromised account.

Compromised LinkedIn Account

George Chen

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Jun 11, 2025

More privacy on VPN? Think again.

Using a VPN is essentially routing your traffic through another (person’s) computer. Other than the question of whether the other computer…

More privacy on VPN? Think again.

George Chen

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Apr 21, 2025

Microsoft ActiveSync Legacy Protocol — Plaintext Credential and Token Exposure Vulnerability

The Ongoing Exposure of ActiveSync

Microsoft ActiveSync Legacy Protocol — Plaintext Credential and Token Exposure Vulnerability

George Chen

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Apr 7, 2025

Cyber Colour Wheel

Cyber Colour Wheel

George Chen

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Mar 13, 2025

Analyzing PayPal Phishing Emails

this time, as a customer

Analyzing PayPal Phishing Emails

George Chen

George Chen

Book Author

Chair @ FIRST DE&TH SIG. Researcher across 30+ bug bounties incl Tesla, Meta, FireEye. 80+ CVEs incl Microsoft & Apple. 60 patents. Speaker @ Black Hat, BSides.

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