Mira Partners Suffers Data Breach Impacting 1,500 Venture Funds in South Korea
Mira Partners, a South Korean fund administration provider serving approximately 1,500 venture funds and 800 general partners including venture capital firms, accelerators, and tech financing companies has confirmed a data breach exposing members’ personal and account information.
The incident occurred between 12:13 p.m. on August 20 and 2:33 p.m. on August 21, when an external attacker used automated tools to exploit a fund member lookup screen. Mira Partners detected the unauthorized access at 2:10 p.m. on August 21 and shut down the affected server shortly after. The company reported no further attacks using the same method following the shutdown, though investigations are ongoing.
Compromised Data:
The breach exposed 26 types of information, including:
- Seven categories of personal data: names, email addresses, phone numbers, addresses, detailed addresses, job titles, and resident registration numbers (leaked in encrypted form).
- Nineteen types of account and history data: member IDs, account status, consent records, login history, and modification logs.
While Mira Partners stated that fund- and investment-related data such as partnership details, investment amounts, ownership ratios, and bank account numbers remained secure, the exposure of encrypted resident registration numbers raises concerns. The company has not confirmed whether the encryption key was also compromised, leaving the potential for decryption unclear until authorities complete their investigation.
Response & Next Steps:
Mira Partners has reported the breach to Korea Internet & Security Agency (KISA), the Personal Information Protection Commission, and law enforcement. Remediation efforts include:
- Modifying the vulnerable lookup screen code.
- Conducting penetration testing via an external cybersecurity firm.
- Strengthening encryption systems and deploying a web application firewall (WAF) and anomaly detection tools.
The full scope of the breach including the number of affected individuals remains unconfirmed, with Mira Partners indicating that details will be disclosed following official investigations. The incident highlights risks in South Korea’s venture investment sector, given the company’s central role in fund administration.
Source: https://www.thelec.net/news/articleView.html?idxno=13458
Mirae Asset Securities & Investments (USA) cybersecurity rating report: https://www.rankiteo.com/company/mirae-asset-securities-investments-usa
"id": "MIR1788236899",
"linkid": "mirae-asset-securities-investments-usa",
"type": "Breach",
"date": "8/2026",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'customers_affected': '1,500 venture funds and 800 '
'general partners',
'industry': 'Venture capital, accelerators, tech '
'financing',
'location': 'South Korea',
'name': 'Mira Partners',
'type': 'Fund administration provider'}],
'attack_vector': 'Automated exploitation of a vulnerable fund member lookup '
'screen',
'data_breach': {'data_encryption': 'Encrypted resident registration numbers '
'(encryption key status unknown)',
'personally_identifiable_information': 'Yes (names, email '
'addresses, phone '
'numbers, addresses, '
'job titles, resident '
'registration numbers)',
'sensitivity_of_data': 'High (personal and account data, '
'including encrypted resident '
'registration numbers)',
'type_of_data_compromised': ['Personal data (names, email '
'addresses, phone numbers, '
'addresses, detailed addresses, '
'job titles, encrypted resident '
'registration numbers)',
'Account and history data '
'(member IDs, account status, '
'consent records, login history, '
'modification logs)']},
'date_detected': '2024-08-21T14:10:00',
'description': 'Mira Partners, a South Korean fund administration provider, '
'confirmed a data breach exposing members’ personal and '
'account information. The incident occurred when an external '
'attacker used automated tools to exploit a fund member lookup '
'screen, exposing 26 types of information including personal '
'data and account details.',
'impact': {'brand_reputation_impact': 'Potential brand reputation damage due '
'to data exposure',
'data_compromised': '26 types of information, including personal '
'data and account details',
'identity_theft_risk': 'High (due to exposure of encrypted '
'resident registration numbers)',
'operational_impact': 'Server shutdown and remediation efforts',
'systems_affected': 'Fund member lookup screen server'},
'initial_access_broker': {'entry_point': 'Fund member lookup screen'},
'investigation_status': 'Ongoing',
'post_incident_analysis': {'corrective_actions': 'Code modification, '
'penetration testing, '
'encryption strengthening, '
'WAF deployment, anomaly '
'detection tools',
'root_causes': 'Vulnerable fund member lookup '
'screen exploited by automated '
'tools'},
'references': [{'source': 'Cyber Incident Description'}],
'regulatory_compliance': {'regulatory_notifications': 'Reported to KISA and '
'Personal Information '
'Protection Commission'},
'response': {'adaptive_behavioral_waf': 'Deployed web application firewall '
'(WAF)',
'containment_measures': 'Shut down the affected server',
'enhanced_monitoring': 'Deployed anomaly detection tools',
'law_enforcement_notified': 'Yes (reported to KISA, Personal '
'Information Protection Commission, '
'and law enforcement)',
'remediation_measures': 'Modified vulnerable lookup screen code, '
'strengthened encryption systems',
'third_party_assistance': 'External cybersecurity firm for '
'penetration testing'},
'threat_actor': 'External attacker',
'title': 'Mira Partners Suffers Data Breach Impacting 1,500 Venture Funds in '
'South Korea',
'type': 'Data Breach',
'vulnerability_exploited': 'Vulnerable fund member lookup screen'}