Cybersecurity firm Proofpoint to buy European rival for $1 billion as it eyes IPO ○ found 2025 › May › 15 (Thu) @ 11:10 UTC a story from CNBC ⚠️ › Top News Cybersecurity ■■ European ■■■ IPO ■■ CEO Sumit Dhawan ■■ CNBC ■■■ preview sentiment