Enterprise Security Report 2026: Perimeter Strengthening vs. Internal Vulnerabilities

Enterprise security defenses show improved perimeter protection but significant vulnerabilities in internal networks, particularly against stealthy attacks and credential theft. The report highlights the limitations of signature-based detection and low alerting rates, exposing critical gaps in modern cybersecurity strategies.

Enterprise defenses are tuned to catch the attacks that make noise. This year's data shows attackers winning by making none.

According to Picus Labs' new Blue Report 2026, which measured more than 338 million real attack simulations across actual client production environments in the first half of 2026, defenses are having one of their strongest years yet. Average prevention effectiveness

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