Of the biggest challenges security decision-makers faced in 2025, the changing/evolving nature of external security threats was the most common, just edging out these other interlinking challenges: 1) lack of visibility and influence within the organization, 2) complexity of the IT environment, 3) lack of comprehensive vulnerability and exposure remediation prioritization strategy, and 4) the changing/evolving nature of internal security threats. This data snapshot underscores how the dynamic nature of the external threat environment amplifies challenges in the internal ecosystem; security leaders must show how protecting against these threats allows the business to operate and grow.