Kevin Rubin, CFO of Zscaler (ZS), joins Market on Close to discuss why the cybersecurity company reaffirmed first-quarter and full-year 2027 guidance during the firm's investor day. As Kevin explains, AI is becoming the biggest tailwind for Zscaler due to customer needs to fend off cyberattacks from AI agents. He talks about ways Zscaler is scaling to assist its growing customer base while protecting its own platform.