Last month, the number of ransomware attacks remained high with 659 recorded in total. This was a slight dip (-5%) from October’s total of 693.
Attacks on healthcare providers declined significantly last month, dropping by 44 percent from 57 attacks in October to 32 attacks last month. In sharp contrast, businesses operating in the healthcare sector (e.g. pharmaceutical companies, medical billing providers, and healthcare tech companies) saw the biggest increase of any sector. Here, attacks rose by 43 percent (from 14 to 20).
The manufacturing sector also saw yet another large increase (up 35 percent from 123 in October to 166 in November), as did the education sector (up 24 percent from 17 to 21).
Qilin continued to take the top spot for the number of claims (107) but Akira (100) and Clop (94) closed in on its lead throughout November. Clop’s attacked its victims through an Oracle zero-day vulnerability exploit.
Key findings for November 2025:
659 attacks in total — 38 confirmed attacks ( confirmed by the entity involved )
) Of the 38 confirmed attacks: 22 were on businesses 10 were on government entities 2 were on healthcare companies 4 were on educational institutions
Of the 621 unconfirmed attacks*: 544 were on businesses 18 were on government entities 30 were on healthcare companies 17 were on educational institutions
The most prolific ransomware gangs were Qilin (107), Akira (100), and Clop (94)
Qilin had the most confirmed attacks (5), followed by INC (3) an
Source: https://www.comparitech.com/news/ransomware-roundup-november-2025/
BleepingComputer cybersecurity rating report: https://www.rankiteo.com/company/bleepingcomputer
"id": "BLE1764669367",
"linkid": "bleepingcomputer",
"type": "Ransomware",
"date": "11/2025",
"severity": "100",
"impact": "5",
"explanation": "Attack threatening the organization’s existence"{'affected_entities': [{'customers_affected': None,
'industry': 'healthcare (providers)',
'location': None,
'name': None,
'size': None,
'type': 'business'},
{'customers_affected': None,
'industry': 'healthcare (pharmaceuticals, '
'medical billing, healthcare '
'tech)',
'location': None,
'name': None,
'size': None,
'type': 'business'},
{'customers_affected': None,
'industry': 'manufacturing',
'location': None,
'name': None,
'size': None,
'type': 'business'},
{'customers_affected': None,
'industry': 'education',
'location': None,
'name': None,
'size': None,
'type': 'business'},
{'customers_affected': None,
'industry': None,
'location': None,
'name': None,
'size': None,
'type': 'government'}],
'attack_vector': ['Oracle zero-day vulnerability (Clop)',
'unspecified (other gangs)'],
'data_breach': {'data_encryption': None,
'data_exfiltration': None,
'file_types_exposed': None,
'number_of_records_exposed': None,
'personally_identifiable_information': None,
'sensitivity_of_data': None,
'type_of_data_compromised': None},
'date_detected': '2025-11-01',
'date_publicly_disclosed': '2025-12-01',
'description': 'In November 2025, ransomware attacks remained '
'high with 659 incidents, a 5% decrease from '
'October (693 attacks). Healthcare providers saw '
'a 44% decline (57 to 32 attacks), while '
'healthcare-adjacent businesses (e.g., '
'pharmaceuticals, medical billing, healthcare '
'tech) experienced a 43% increase (14 to 20 '
'attacks). Manufacturing attacks rose 35% (123 to '
'166), and education attacks increased 24% (17 to '
'21). Top ransomware gangs were Qilin (107 '
'claims), Akira (100), and Clop (94), with Clop '
'exploiting an Oracle zero-day vulnerability. Of '
'38 confirmed attacks: 22 targeted businesses, 10 '
'government entities, 2 healthcare companies, and '
'4 educational institutions. Unconfirmed attacks '
'totaled 621, predominantly targeting businesses '
'(544).',
'impact': {'brand_reputation_impact': 'high (sector-wide '
'disruption)',
'conversion_rate_impact': None,
'customer_complaints': None,
'data_compromised': None,
'downtime': None,
'financial_loss': None,
'identity_theft_risk': None,
'legal_liabilities': None,
'operational_impact': None,
'payment_information_risk': None,
'revenue_loss': None,
'systems_affected': None},
'initial_access_broker': {'backdoors_established': None,
'data_sold_on_dark_web': None,
'entry_point': ['Oracle zero-day '
'(Clop)',
'unspecified (other '
'gangs)'],
'high_value_targets': ['healthcare '
'(pharmaceuticals, '
'medical '
'billing, tech)',
'manufacturing',
'education'],
'reconnaissance_period': None},
'investigation_status': 'ongoing (aggregated sector analysis)',
'motivation': 'financial gain (ransomware)',
'post_incident_analysis': {'corrective_actions': None,
'root_causes': ['Exploitation of '
'unpatched Oracle '
'zero-day '
'vulnerability (Clop)',
'Targeted campaigns '
'against high-value '
'sectors '
'(healthcare-adjacent, '
'manufacturing, '
'education)']},
'ransomware': {'data_encryption': True,
'data_exfiltration': None,
'ransom_demanded': None,
'ransom_paid': None,
'ransomware_strain': ['Qilin',
'Akira',
'Clop',
'INC Ransomware']},
'recommendations': ['Patch Oracle zero-day vulnerabilities '
'promptly to mitigate Clop ransomware risks.',
'Enhance monitoring for healthcare-adjacent '
'sectors (pharmaceuticals, medical billing, '
'healthcare tech) due to rising attack '
'trends.',
'Implement sector-specific ransomware '
'defenses for manufacturing and education, '
'given significant attack increases.'],
'references': [{'date_accessed': '2025-12-01',
'source': 'Ransomware Attack Trends Report - '
'November 2025',
'url': None}],
'regulatory_compliance': {'fines_imposed': None,
'legal_actions': None,
'regulations_violated': None,
'regulatory_notifications': None},
'response': {'adaptive_behavioral_waf': None,
'communication_strategy': None,
'containment_measures': None,
'enhanced_monitoring': None,
'incident_response_plan_activated': None,
'law_enforcement_notified': None,
'network_segmentation': None,
'on_demand_scrubbing_services': None,
'recovery_measures': None,
'remediation_measures': None,
'third_party_assistance': None},
'threat_actor': ['Qilin', 'Akira', 'Clop', 'INC Ransomware'],
'title': 'November 2025 Ransomware Attack Trends and Key '
'Findings',
'type': ['ransomware', 'zero-day exploit'],
'vulnerability_exploited': 'Oracle zero-day (Clop gang)'}