UK Cybersecurity Threat Landscape 2025

The United Kingdom has entered one of the most critical periods in its cybersecurity history. According to Brandefense’s United Kingdom Threat Landscape Report 2025, adversaries are expanding their operations across dark web ecosystems, financial fraud campaigns, ransomware attacks, and vulnerability exploitation at an unprecedented scale.

Key Findings;

  • Dark Web Surge: Mentions of the United Kingdom on underground forums spiked by 423% in Q2 2025, surpassing 1.2 million monthly references, signaling coordinated threat campaigns.

  • Credential Exposures: Infostealer malware leaks heavily impacted telecommunications (32%) and energy & utilities (18%), with additional exposure in government, manufacturing, healthcare, and e-commerce.

  • Financial Crime Growth: Stolen credit card detections skyrocketed from 15,742 in early 2024 to 346,577 in 2025 — a 2,100% year-over-year increase.

  • Ransomware Epidemic: At least 319 ransomware attacks confirmed, with manufacturing and business services among the hardest hit. Groups like LockBit3, RansomHub, and BlackBasta dominate the landscape.

  • Exploited Vulnerabilities: High-severity CVEs such as Fortinet FortiManager, Check Point VPN, and VMware vCenter were actively exploited against UK organizations.

  • Strategic Targeting: Threat actors are shifting from opportunistic to systematic, multi-sector campaigns, making the UK a priority target for both financially motivated and state-aligned adversaries.

Whether you are leading a security program, managing risk at the executive level, or securing a critical sector, this report equips you with the knowledge needed to anticipate and counter adversaries.

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