Microsoft's 2026 Digital Defense Report says attackers are gaining from AI faster than defenders

Microsoft's 2026 Digital Defense Report concludes that cyberattackers are currently benefiting from AI faster than defenders. According to the report, AI helps attackers speed up vulnerability discovery, malware development and post-compromise activity, while security teams struggle to keep pace. Microsoft says AI is reducing the time, expertise and cost needed to find and exploit weaknesses, and that it lets both attackers and defenders work with more speed, scale and autonomy. "While the equilibrium between attackers and defenders will likely ultimately be re-established, in the near term we are in a period where attackers are reaching to advantages first, and defenders will need to move sharply in order to close the gap," the company writes. Microsoft says the imbalance is clearest in vulnerability research, where AI-powered discovery increasingly outruns organizations' ability to remediate. It notes that "remediation is inherently much slower than discovery," partly because many systems lack the unit and integration testing needed to deploy code changes quickly. The assessment matters for organizations that patch on slow cycles or run legacy software, because it suggests the gap between a flaw being found and being exploited is shrinking. Microsoft expects defenders to eventually gain similar benefits from AI, but its message for now is that security teams need to speed up testing and deployment.