United Kingdom
United Kingdom Infostealer Threat Report — October 2026
10/01/2026 – 10/31/2026
Threat summary
Key figures from the month's threat activity.
Overview
Most common malware family: VIDAR (15.1% of infections). Sector with the most employee account leaks: Education. Leaked accounts fell by 51.4% compared with the previous month.
Ransomware victims in United Kingdom2,854
infected devices · from 10 families
Report periodOct 1, 2026 - Oct 31, 2026
Risk score
24-15vs previous month
- Infected devices
- 2,854
- Android devices
- 962
- Domains
- 38,730
- Employee accounts
- 907
- Customer accounts
- 229,438
- Families
- 10
Top 10 malware families
infections- 1VIDAR432
- 2ACREED213
- 3REMUS123
- 4STEALC36
- 5ELYSIUM STEALER36
- 6LUMMAC23
- 7REDLINE23
- 8AURA STEALER22
- 9GHOSTBUSTERS STEALER7
- 10MACSYNC STEALER7
The full list is in the PDF reportDownload report
Top 10 antivirus
infected devices- 1Windows Defender156
- 2Reason Cybersecurity5
- 3Avast2
- 4Malwarebytes2
Breakdown of leaks
Breakdown by sector, file type and critical system.
Employee accounts by sector
organizationsrecordsRansomware victimsemployee accounts- 1Education71organizations11.7Krecords1Ransomware victims197employee accounts
- 2Telecommunications5organizations2.4Krecords–Ransomware victims40employee accounts
- 3Technology12organizations58.0Krecords5Ransomware victims17employee accounts
- 4Media5organizations12.5Krecords–Ransomware victims11employee accounts
- 5Nonprofit3organizations2.6Krecords–Ransomware victims10employee accounts
- 6Retail and e-commerce4organizations23.7Krecords–Ransomware victims7employee accounts
- 7Finance4organizations11.0Krecords2Ransomware victims7employee accounts
- 8Healthcare4organizations2.3Krecords1Ransomware victims5employee accounts
- 9Professional services4organizations661records5Ransomware victims5employee accounts
- 10Government3organizations6.0Krecords2Ransomware victims4employee accounts
The full list is in the PDF reportDownload report
Report contents
Sections and pages of the full report.
Contents
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