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Java Web Project
Java Web Project
Apr 18, 2026 · Information Security

How a Midnight SMS Scam Revealed the Need for a Multi‑Layer Anti‑Abuse System

A night‑time SMS billing attack that drained ¥11,500 in two hours exposed flaws in a naïve Session‑based verification design, prompting a detailed, five‑layer defense architecture that combines gateway rate limiting, Redis token‑bucket controls, advanced captcha tracking, device fingerprinting, blacklist automation, and honey‑pot tactics to raise attack costs.

CaptchaNginxRedis
0 likes · 14 min read
How a Midnight SMS Scam Revealed the Need for a Multi‑Layer Anti‑Abuse System
Qu Tech
Qu Tech
Aug 23, 2021 · Information Security

How Qutoutiao Built a Robust Anti-Cheat SDK and Device Fingerprinting System

This article outlines Qutoutiao's security team's development of a standalone anti‑cheat SDK, its custom device‑fingerprinting architecture, the evolution of their fingerprint algorithms, the creation of the tuid identifier, and how these technologies together combat black‑market attacks while maintaining compliance and stability.

SDKanti-cheatdevice fingerprint
0 likes · 18 min read
How Qutoutiao Built a Robust Anti-Cheat SDK and Device Fingerprinting System
NetEase Smart Enterprise Tech+
NetEase Smart Enterprise Tech+
Mar 9, 2021 · Information Security

How Server‑Side Device Fingerprinting Boosts Security and Stability

Device fingerprinting uniquely identifies devices using collected data; this article explains how uniqueness and stability are measured, shows probability‑based calculations for single and combined fields, discusses the shortcomings of client‑side methods, and details a server‑side multi‑algorithm approach that improves security and stability.

anti-frauddecision treedevice fingerprint
0 likes · 11 min read
How Server‑Side Device Fingerprinting Boosts Security and Stability