Nintendo

The high-profile hacking group **Crimson Collective** claimed to have breached Nintendo, allegedly gaining unauthorized access to sensitive internal data, including **production assets, developer files, and backups**. A screenshot shared by cybersecurity firm **Hackmanac** on **X (Twitter)** appeared to show folders containing Nintendo’s proprietary data, though the company has not yet confirmed the attack’s legitimacy. Given Crimson Collective’s prior attack on **Red Hat**—where they stole **570GB of data** from GitHub repositories and attempted extortion—it is speculated that this breach follows a similar pattern: **data theft followed by ransom demands to prevent leaks**. If confirmed, the attack could compromise Nintendo’s **intellectual property (IP)**, including unreleased game assets, internal development tools, and potentially **employee or partner data** exposed in backups. While no **customer personal data** has been reported as stolen, the leak of **confidential production materials** could severely impact Nintendo’s competitive edge, reputation, and legal standing, given its aggressive protection of IP. The company’s historical silence on breaches (unless legally mandated) suggests details may remain undisclosed unless regulatory or public pressure forces transparency. The incident aligns with a growing trend of **gaming industry cyberattacks**, following similar breaches at **Rockstar, Insomniac Games, and CD Projekt Red**, where source code and internal files were leaked or held for ransom.

Source: https://www.tomshardware.com/tech-industry/cyber-security/nintendo-allegedly-hacked-by-crimson-collective-hacking-group-screenshot-shows-leaked-folders-production-assets-developer-files-and-backups

TPRM report: https://www.rankiteo.com/company/hackmanac

"id": "hac1202012101225",
"linkid": "hackmanac",
"type": "Cyber Attack",
"date": "5/2025",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"

{'affected_entities': [{'industry': 'video games',
                        'location': 'Kyoto, Japan',
                        'name': 'Nintendo',
                        'size': 'large (multinational)',
                        'type': 'corporation'}],
 'data_breach': {'data_exfiltration': 'alleged (unconfirmed)',
                 'sensitivity_of_data': 'high (potential intellectual '
                                        'property)',
                 'type_of_data_compromised': ['production assets',
                                              'developer files',
                                              'backups']},
 'date_publicly_disclosed': '2025-10-11',
 'description': 'A high-profile hacking group called Crimson Collective '
                'claimed to have successfully hacked Nintendo, sharing a '
                'screenshot allegedly showing proof of the attack with folders '
                'containing Nintendo data, including production assets, '
                'developer files, and backups. Nintendo has not yet confirmed '
                'or denied the breach. The group is known for a similar attack '
                'on Red Hat, where it stole 570GB of data and attempted '
                'extortion. If legitimate, this attack may follow the same '
                'extortion tactic.',
 'impact': {'brand_reputation_impact': 'potential (unconfirmed)',
            'data_compromised': ['production assets',
                                 'developer files',
                                 'backups']},
 'initial_access_broker': {'high_value_targets': ['intellectual property',
                                                  'production assets',
                                                  'developer files']},
 'investigation_status': 'unconfirmed (alleged, no official statement from '
                         'Nintendo)',
 'motivation': ['financial gain', 'extortion', 'data theft'],
 'ransomware': {'data_exfiltration': 'alleged (unconfirmed)'},
 'references': [{'date_accessed': '2025-10-11',
                 'source': "Tom's Hardware",
                 'url': 'https://t.co/kJbN062Yq3'},
                {'date_accessed': '2025-10-11',
                 'source': 'Hackmanac (via X/Twitter)'}],
 'threat_actor': 'Crimson Collective',
 'title': 'Alleged Nintendo Data Breach by Crimson Collective',
 'type': ['data breach', 'unauthorized access', 'potential extortion']}