Microsoft’s Digital Defense Report 2026 says threat actors are using AI to compress portions of the attack lifecycle, including vulnerability discovery, phishing customization, malware creation, credential discovery, lateral movement, and data exfiltration. The company warned that some post-compromise activities that previously took days can now be completed in minutes.
The report does not describe entirely new attack methods; its central concern is the speed and scale that AI-enabled workflows can add to familiar techniques. Microsoft also said phishing accounted for a larger share of observed initial-access incidents and that exploitation of public-facing applications increased.
For defenders, the practical response is to reduce opportunities for rapid escalation: deploy phishing-resistant MFA, enforce least privilege and tiered administration, patch exposed applications quickly, and connect telemetry so unusual identity and network activity can be investigated before an intruder can move laterally.
Source: Infosecurity Magazine coverage of Microsoft’s Digital Defense Report 2026