3rd Party Risk Management
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Governance & Risk Management
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Incident & Breach Response
Retailers Report a Spurt in Breaches

Jewelry retailer Tiffany & Co. said hackers stole South Korean customers’ data from a third-party vendor’s platform, a disclosure that came shortly after sister brand Dior announced a similar breach.
See Also: On Demand | Global Incident Response Report 2025
The Tiffany’s breach occurred on April 8 but the company discovered on May 9 that hackers stole the personal information of South Korean shoppers, it disclosed in emails sent to customers reported the Chosun Daily.
Tiffany’s disclosure followed a similar notification by cosmetics giant Dior, also owned by French multinational luxury goods conglomerate Louis Vuitton Moët Hennessy, about threat actors stealing the personal information of its customers. LVMH said the breach did not compromise customers’ bank account or payment card information.
LVMH’s portfolio of international apparel, jewelry and fashion brands include Christian Dior Couture, Sephora, Bulgari, TAG Heuer, Marc Jacobs and Givenchy, but none of these brands have reported any data security incidents over the past month.
According to Korean news outlet JoongAng Daily, Dior may face regulatory action in South Korea since it only notified the Personal Information Protection Commission, or PIPC, about the cybersecurity incident. It should have alerted the PIPC and the Korea Internet and Security Agency. A failure to adequately report cybersecurity incidents to authorities may result in fines of up to 30 million won, or $21,859.
The data breach announcements by Tiffany and Dior followed high-profile breaches suffered by globally renowned retail brands, including Marks & Spencer. The British High Street retailer suffered a cyberattack in April that forced it to pause taking orders through its websites and apps and faced billions of pounds in losses (see: M&S Reportedly Hacked Using Third-Party Credentials).
Lingerie retailer Victoria’s Secret also disclosed a cybersecurity incident on Thursday through a brief notification on its website. It said it took down its website and some in-store services as a precaution and its teams are working round-the-clock to fully restore operations.