Gabia Suffers Data Breach Exposing Nearly 3,000 Customers’ Personal Information
On September 21, South Korean cloud and IT infrastructure provider Gabia confirmed a data breach affecting 2,998 customers, including individuals and corporate clients. The incident occurred at approximately 11:45 a.m. local time, when an external attacker exploited a vulnerability in the company’s web services specifically, insufficient validation of external requests to gain access to internal systems.
The exposed data included customer names, IDs, email addresses, and mobile phone numbers, though passwords were not compromised. Gabia detected the breach shortly after and immediately blocked the attack vector, disabled related accounts, and reported the incident to South Korea’s Korea Internet & Security Agency (KISA) and the Personal Information Protection Commission. The exact timing of the reports was not disclosed.
In response, Gabia preserved forensic evidence, strengthened access controls, patched the exploited vulnerability, and conducted a full review for similar security gaps. The company also enhanced anomaly detection and monitoring to prevent further incidents. While no additional data leaks have been confirmed, Gabia is collaborating with authorities to determine the full scope of the breach and will provide updates as new details emerge.
Gabia, a Ministry of Science and ICT-designated security monitoring firm, offers services including security consulting, incident response, and vulnerability assessments. Its subsidiary, X-Gate, specializes in security solutions and monitoring. The breach underscores the risks faced by even security-focused providers in safeguarding customer data.
Source: https://www.thelec.net/news/articleView.html?idxno=14202
가비아 (Gabia) cybersecurity rating report: https://www.rankiteo.com/company/gabia-co.-ltd.
"id": "GAB1790591686",
"linkid": "gabia-co.-ltd.",
"type": "Breach",
"date": "9/2026",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'customers_affected': '2998',
'industry': 'Cloud and IT Infrastructure, '
'Cybersecurity',
'location': 'South Korea',
'name': 'Gabia',
'type': 'Company'}],
'attack_vector': 'Exploitation of insufficient validation of external '
'requests',
'data_breach': {'data_encryption': 'No (passwords were not compromised)',
'number_of_records_exposed': '2998',
'personally_identifiable_information': 'Names, IDs, email '
'addresses, mobile '
'phone numbers',
'sensitivity_of_data': 'High (Personally Identifiable '
'Information)',
'type_of_data_compromised': 'Personal Information'},
'date_detected': '2023-09-21T11:45:00+09:00',
'date_publicly_disclosed': '2023-09-21',
'description': 'On September 21, South Korean cloud and IT infrastructure '
'provider Gabia confirmed a data breach affecting 2,998 '
'customers, including individuals and corporate clients. The '
'incident occurred when an external attacker exploited a '
'vulnerability in the company’s web services to gain access to '
'internal systems. The exposed data included customer names, '
'IDs, email addresses, and mobile phone numbers, though '
'passwords were not compromised.',
'impact': {'data_compromised': 'Customer names, IDs, email addresses, and '
'mobile phone numbers',
'identity_theft_risk': 'High',
'systems_affected': 'Web services'},
'investigation_status': 'Ongoing (collaborating with authorities to determine '
'full scope)',
'post_incident_analysis': {'corrective_actions': 'Strengthened access '
'controls, patched '
'vulnerability, enhanced '
'anomaly detection and '
'monitoring',
'root_causes': 'Insufficient validation of '
'external requests'},
'references': [{'source': 'Gabia Incident Disclosure'}],
'regulatory_compliance': {'regulatory_notifications': 'Reported to KISA and '
'Personal Information '
'Protection Commission'},
'response': {'communication_strategy': 'Reported to authorities, preserved '
'forensic evidence, will provide '
'updates as new details emerge',
'containment_measures': 'Blocked the attack vector, disabled '
'related accounts',
'enhanced_monitoring': 'Yes',
'incident_response_plan_activated': 'Yes',
'law_enforcement_notified': 'Yes (Korea Internet & Security '
'Agency (KISA) and Personal '
'Information Protection Commission)',
'remediation_measures': 'Patched the exploited vulnerability, '
'conducted a full review for similar '
'security gaps'},
'threat_actor': 'External attacker',
'title': 'Gabia Suffers Data Breach Exposing Nearly 3,000 Customers’ Personal '
'Information',
'type': 'Data Breach',
'vulnerability_exploited': 'Insufficient validation of external requests'}