AI security spending to reach $4.8B by 2027, Gartner says

Gartner expects spending on securing AI to grow from $2.8 billion in 2026 to $4.8 billion in 2027, an 83% year-over-year jump. By 2028, half of enterprise cybersecurity incident-response work will involve incidents tied to custom AI applications, many of which reach production before meaningful testing.

• Gartner: AI security spending at $2.8B in 2026, rising to $4.8B in 2027
• That is an 83% year-over-year increase
• By 2028, half of cyber incident response will involve custom AI apps
• Over 100 firms including OpenAI, Google and Microsoft urged stronger AI defenses