2025: The Year Cybersecurity Crossed the AI Rubicon

This piece provides a thematic overview of 2025 cybersecurity, arguing that AI has created a before-and-after moment by accelerating attacks and defenses through agentic, adaptive, and generative capabilities, while also influencing geopolitics. It also surveys non-AI themes, including the continued evolution and impact of ransomware, heightened risks to critical infrastructure, rising supply-chain attacks, organizational/capability challenges, and ongoing cloud security issues, and predicts AI’s growing dominance in cybersecurity heading into 2026.