ShopEase and EuroMart: Inloggen

Massive Credential Stuffing Attack Targets Major Retailers Ahead of Holiday Season

A large-scale credential stuffing attack has compromised customer accounts across multiple major retailers in the U.S. and Europe, just weeks before the peak holiday shopping period. The attack, detected in early November 2023, leveraged stolen username-password pairs from previous data breaches to gain unauthorized access to user accounts.

Security researchers at CyberShield Labs identified the campaign, which primarily targeted e-commerce platforms, including RetailGiant, ShopEase, and EuroMart, among others. The attackers automated login attempts using botnets, exploiting weak or reused passwords to bypass authentication measures. While the exact number of affected accounts remains unconfirmed, initial estimates suggest tens of thousands of credentials were successfully exploited.

The breach exposed sensitive customer data, including payment details, purchase histories, and personal information. Some victims reported unauthorized transactions, though retailers have stated that payment systems were not directly compromised. Affected companies have since forced password resets, implemented multi-factor authentication (MFA) requirements, and notified impacted users.

The attack underscores the persistent risks of password reuse and the growing sophistication of automated credential-based threats. Retailers are now under pressure to enhance security measures ahead of the holiday shopping surge, as cybercriminals increasingly target high-traffic periods for maximum disruption.

Source: https://trends.levif.be/a-la-une/tech/une-cyberattaque-paralyse-une-centrale-energetique-britannique/

ShopEase TPRM report: https://www.rankiteo.com/company/shopease

EuroMart TPRM report: https://www.rankiteo.com/company/uma-euro-market

"id": "umasho1787833866",
"linkid": "uma-euro-market, shopease",
"type": "Cyber Attack",
"date": "8/2026",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"

{'affected_entities': [{'customers_affected': 'Tens of thousands (estimated)',
                        'industry': 'E-commerce',
                        'location': 'U.S.',
                        'name': 'RetailGiant',
                        'type': 'Retailer'},
                       {'customers_affected': 'Tens of thousands (estimated)',
                        'industry': 'E-commerce',
                        'location': 'U.S.',
                        'name': 'ShopEase',
                        'type': 'Retailer'},
                       {'customers_affected': 'Tens of thousands (estimated)',
                        'industry': 'E-commerce',
                        'location': 'Europe',
                        'name': 'EuroMart',
                        'type': 'Retailer'}],
 'attack_vector': 'Automated botnet login attempts',
 'customer_advisories': 'Notified impacted users about the breach and forced '
                        'password resets',
 'data_breach': {'number_of_records_exposed': 'Tens of thousands (estimated)',
                 'personally_identifiable_information': 'Yes',
                 'sensitivity_of_data': 'High',
                 'type_of_data_compromised': 'Payment details, purchase '
                                             'histories, personal information'},
 'date_detected': '2023-11',
 'description': 'A large-scale credential stuffing attack has compromised '
                'customer accounts across multiple major retailers in the U.S. '
                'and Europe, just weeks before the peak holiday shopping '
                'period. The attack leveraged stolen username-password pairs '
                'from previous data breaches to gain unauthorized access to '
                'user accounts. Security researchers at CyberShield Labs '
                'identified the campaign, which primarily targeted e-commerce '
                'platforms, including RetailGiant, ShopEase, and EuroMart. The '
                'attackers automated login attempts using botnets, exploiting '
                'weak or reused passwords to bypass authentication measures. '
                'The breach exposed sensitive customer data, including payment '
                'details, purchase histories, and personal information. Some '
                'victims reported unauthorized transactions, though retailers '
                'have stated that payment systems were not directly '
                'compromised.',
 'impact': {'data_compromised': 'Payment details, purchase histories, personal '
                                'information',
            'identity_theft_risk': 'High',
            'payment_information_risk': 'High',
            'systems_affected': 'E-commerce platforms'},
 'lessons_learned': 'Persistent risks of password reuse and growing '
                    'sophistication of automated credential-based threats',
 'post_incident_analysis': {'corrective_actions': 'Forced password resets, '
                                                  'implemented MFA',
                            'root_causes': 'Weak or reused passwords, lack of '
                                           'multi-factor authentication (MFA)'},
 'recommendations': 'Enhance security measures, including multi-factor '
                    'authentication (MFA), ahead of high-traffic periods',
 'references': [{'source': 'CyberShield Labs'}],
 'response': {'communication_strategy': 'Notified impacted users',
              'containment_measures': 'Forced password resets, implemented '
                                      'multi-factor authentication (MFA)',
              'third_party_assistance': 'CyberShield Labs'},
 'title': 'Massive Credential Stuffing Attack Targets Major Retailers Ahead of '
          'Holiday Season',
 'type': 'Credential Stuffing',
 'vulnerability_exploited': 'Weak or reused passwords'}