---
title: "Mastercard announced on September 13th that unauthorized transactions were detected within China. Th"
description: "Mastercard announced on September 13th that unauthorized transactions were detected within China. The company has initiated an emergency investigation with issuing banks and established a special team"
type: "news"
locale: "en"
url: "https://longbridge.com/en/news/257201920.md"
published_at: "2025-09-13T09:37:48.000Z"
---

# Mastercard announced on September 13th that unauthorized transactions were detected within China. Th

> Mastercard announced on September 13th that unauthorized transactions were detected within China. The company has initiated an emergency investigation with issuing banks and established a special team to trace the source of the risk and protect cardholder funds. Mastercard and Mastercard remind cardholders to regularly check transactions, enable real-time alerts, ensure transaction security, and promptly contact the issuing bank if any anomalies are detected

On September 13th, Mastercard and UnionPay announced that they recently detected some unauthorized transactions within China. The company, together with the issuing banks, immediately initiated an emergency investigation and established a special task force to trace the source of the risks, block potential risks, and jointly promote the fund protection process for relevant cardholders to avoid losses that should not be borne by them. Mastercard and UnionPay remind all cardholders: regularly check transactions through the issuing bank's APP, SMS notifications, or billing statements (paying special attention to non-personal consumption and unusual small deductions), promptly enable real-time transaction alerts, keep offline card usage in sight, and protect card numbers and verification codes during online transactions; if unauthorized transactions are discovered, immediately call the issuing bank's customer service to verify the situation and freeze the account

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> **Disclaimer**: This article is for reference only and does not constitute any investment advice.