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Java Companion
Java Companion
May 23, 2026 · Information Security

Spending 25 yuan on ChatGPT Plus Reveals the Full Gray‑Market Resale Chain

The author shows how buying a ChatGPT Plus subscription for just 25 yuan via a Turkish Apple ID enables resellers to reuse the same Apple receipt, exploiting OpenAI’s lack of purchaser binding, and outlines the entire gray‑market workflow, its profitability, and the associated security risks.

Apple receipt vulnerabilityChatGPT PlusOpenAI security
0 likes · 8 min read
Spending 25 yuan on ChatGPT Plus Reveals the Full Gray‑Market Resale Chain
DataFunSummit
DataFunSummit
Nov 25, 2022 · Information Security

Black and Gray Market Threats and Countermeasures in the Residential Services Industry

This article presents a comprehensive analysis of black‑gray market activities in the residential services sector, detailing industry service models, typical fraud scenarios, intelligence‑gathering architecture, traceability capabilities, and multi‑stage counter‑measure processes aimed at detection, investigation, and prosecution.

Information SecurityIntelligenceanti-fraud
0 likes · 11 min read
Black and Gray Market Threats and Countermeasures in the Residential Services Industry
DataFunSummit
DataFunSummit
Mar 20, 2022 · Information Security

Black and Gray Market Intelligence and Countermeasures in the Residential Service Industry (Beike)

This presentation outlines the landscape of black and gray market activities in China's residential real‑estate platform, describes the various fraud scenarios, details intelligence collection, tracing architecture, and anti‑fraud measures, and shares typical cases such as fake C‑side registrations and crawler attacks.

Information SecurityIntelligenceReal Estate
0 likes · 11 min read
Black and Gray Market Intelligence and Countermeasures in the Residential Service Industry (Beike)