Coupang Faces Securities Investigation Following Massive Data Breach
Shareholder rights law firm Johnson Fistel, PLLP has launched an investigation into Coupang, Inc. (NYSE: CPNG) over potential violations of federal securities laws. The probe centers on allegations that the company and its executives made false or misleading statements or failed to disclose critical information to investors regarding a major cybersecurity incident.
On November 29, 2025, Coupang revealed that a data breach had compromised the personal information of 33.7 million customer accounts. The disclosure triggered an immediate stock decline, with shares dropping $1.51 (5.36%) from $28.16 on November 28 to $26.65 by December 1.
The fallout intensified on December 10, 2025, when The New York Times reported that the CEO of Coupang’s South Korean unit had resigned amid the breach’s escalating repercussions. Following the news, the company’s stock fell an additional $0.87 (3.23%), closing at $26.06.
Johnson Fistel is examining whether Coupang’s leadership adequately disclosed the breach’s risks and impact to investors. The firm, which specializes in securities fraud and shareholder rights, invites affected investors to participate in the investigation at no cost. The case highlights the financial and reputational consequences of cybersecurity failures in publicly traded companies.
Coupang cybersecurity rating report: https://www.rankiteo.com/company/coupang
"id": "COU1768252702",
"linkid": "coupang",
"type": "Breach",
"date": "11/2025",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'customers_affected': '33.7 million',
'industry': 'E-commerce',
'location': 'South Korea',
'name': 'Coupang, Inc.',
'type': 'Public Company'}],
'data_breach': {'number_of_records_exposed': '33.7 million',
'personally_identifiable_information': 'Yes',
'sensitivity_of_data': 'High',
'type_of_data_compromised': 'Personal information'},
'date_publicly_disclosed': '2025-11-29',
'description': 'Coupang, Inc. disclosed a cybersecurity incident compromising '
'the personal information of approximately 33.7 million '
'customer accounts. The breach led to a decline in stock price '
'and the resignation of the head of Coupang’s South Korean '
'unit.',
'impact': {'brand_reputation_impact': 'Stock price decline and executive '
'resignation',
'data_compromised': 'Personal information of approximately 33.7 '
'million customer accounts',
'identity_theft_risk': 'High',
'legal_liabilities': 'Securities law investigation and potential '
'shareholder lawsuits'},
'investigation_status': 'Ongoing',
'references': [{'source': 'Globe Newswire',
'url': 'https://www.johnsonfistel.com/investigations/coupang-cpng/'},
{'source': 'The New York Times'}],
'regulatory_compliance': {'legal_actions': 'Securities law investigation'},
'stakeholder_advisories': 'Shareholders may be eligible to participate in the '
'investigation if they suffered losses.',
'title': 'Coupang Data Breach and Securities Law Investigation',
'type': 'Data Breach'}