AI-assisted development tools are generating production code at a speed that outpaces every security review model organizations currently operate. Research from Veracode (February 2026) and the Center for Security and Emerging Technology (CSET) independently confirms that AI systems introduce insecure code patterns, including injection flaws, improper access controls, and vulnerable dependencies, faster and at greater scale than traditional gate-based review can address. For CISOs and boards, this is not a vulnerability to patch; it is an architectural shift that demands security controls move inside the development agent itself rather than sitting downstream as a final checkpoint.