Security Citigroup’s CFO Mark Mason: Cybersecurity costs are surging "One of the most rapidly growing expense line items" -- with Zscaler and CyberArk among the vendors getting paid. Edward Targett Sep 19, 2024 - 2 min read Mark Mason, Citigroup's chief financial officer. Credit: Citigroup Get the full story: Subscribe for free Join peers managing over $100 billion in annual IT spend and subscribe to unlock full access to The Stack’s analysis and events. Subscribe now Already a member? Sign in