Massive Data Leak from Chinese Supercomputing Center Raises Security Concerns
A potential data breach at China’s National Supercomputing Center (NSCC) has sparked alarm after an anonymous source, identified as FlamingChina, leaked over 10 petabytes (10,240 terabytes) of sensitive files online. The data, allegedly exfiltrated over six months via a botnet, includes classified documents marked "secret" in Chinese, military equipment renderings, and schematics for missiles and bombs.
Security consultant Dakota Cary of SentinelOne analyzed portions of the files, confirming their alignment with the NSCC’s typical workload high-performance computing (HPC) tasks for a diverse client base. However, independent verification remains elusive, with outlets like geo.tv and CNN unable to authenticate the data’s origin. Cybersecurity researcher Marc Hofer engaged with FlamingChina via Telegram, but no third-party confirmation has emerged.
The scale of the breach raises questions about the NSCC’s network security. Exfiltrating such a massive volume undetected suggests either severe network segmentation flaws or disabled/unmonitored logs. Reports from Vision Times in March 2026 had previously flagged potential weaknesses in the NSCC’s internal network isolation.
To date, no public forensic evidence such as authenticated logs, verified network transfer traces, or confirmed HPC file formats has been presented to substantiate the claims. The incident underscores ongoing concerns about cybersecurity vulnerabilities in critical infrastructure.
National Supercomputing Centre (NSCC) Singapore cybersecurity rating report: https://www.rankiteo.com/company/nsccsg
"id": "NSC1775824076",
"linkid": "nsccsg",
"type": "Breach",
"date": "3/2026",
"severity": "100",
"impact": "6",
"explanation": "Attack threatening the economy of geographical region"{'affected_entities': [{'industry': 'Supercomputing/High-Performance Computing '
'(HPC)',
'location': 'China',
'name': 'National Supercomputing Center (NSCC)',
'type': 'Government/Research Institution'}],
'attack_vector': 'Botnet',
'data_breach': {'data_exfiltration': 'Yes (allegedly over six months)',
'sensitivity_of_data': "High (marked 'secret' in Chinese)",
'type_of_data_compromised': ['Classified documents',
'Military equipment renderings',
'Schematics for missiles and '
'bombs']},
'description': 'A potential data breach at China’s National Supercomputing '
'Center (NSCC) has sparked alarm after an anonymous source, '
'identified as *FlamingChina*, leaked over 10 petabytes '
'(10,240 terabytes) of sensitive files online. The data, '
'allegedly exfiltrated over six months via a botnet, includes '
"classified documents marked 'secret' in Chinese, military "
'equipment renderings, and schematics for missiles and bombs. '
'Independent verification remains elusive, with no third-party '
'confirmation of the data’s origin.',
'impact': {'brand_reputation_impact': 'Raised security concerns',
'data_compromised': 'Over 10 petabytes (10,240 terabytes)',
'systems_affected': 'National Supercomputing Center (NSCC) '
'network'},
'investigation_status': 'Ongoing (no third-party verification)',
'lessons_learned': 'The incident underscores ongoing concerns about '
'cybersecurity vulnerabilities in critical infrastructure, '
'particularly regarding network segmentation and log '
'monitoring.',
'post_incident_analysis': {'root_causes': ['Network segmentation flaws',
'Disabled/unmonitored logs']},
'references': [{'source': 'SentinelOne (Dakota Cary)'},
{'source': 'geo.tv'},
{'source': 'CNN'},
{'source': 'Marc Hofer (Cybersecurity Researcher)'},
{'source': 'Vision Times'}],
'threat_actor': 'FlamingChina (anonymous source)',
'title': 'Massive Data Leak from Chinese Supercomputing Center Raises '
'Security Concerns',
'type': 'Data Breach',
'vulnerability_exploited': 'Network segmentation flaws or '
'disabled/unmonitored logs'}