[2/18 16:00] xAI Gets $3B from Saudi-backed HUMAIN / Cogent Security Raises $42M for AI Vulnerability Remediation

AI News Flash for February 18, 2026 at 16:00 UTC. Topics: 1. xAI Gets $3B from Saudi-backed HUMAIN https://www.nytimes.com/2026/02/18/business/xai-humain-saudi-musk-spacex.html 2. Cogent Security Raises $42M for AI Vulnerability Remediation https://fortune.com/2026/02/18/exclusive-bain-and-greylock-bet-42-million-that-ai-agents-can-finally-fix-cybersecuritys-messiest-bottleneck/ 3. Kana Emerges from Stealth with $15M for Marketing AI Agents https://techcrunch.com/2026/02/18/kana-emerges-from-stealth-with-15m-to-build-flexible-ai-agents-for-marketers/ 4. AI Productivity Paradox — Over 80% of Firms Report No Impact https://www.marketplace.org/story/2026/02/18/companies-actively-using-ai-report-little-impact-on-productivity