Mandos Brief is a weekly cybersecurity newsletter delivered every Sunday that provides security intelligence for security leaders, CISOs, and cybersecurity professionals. The newsletter offers a curated 10-minute read covering developments across multiple domains of cybersecurity and leadership. The newsletter covers six main content areas: industry news about security incidents, vulnerabilities, and emerging threats; leadership insights drawn from security programs, industry reports, and CISO experiences; career development intelligence including job market trends, emerging roles, and skills requirements; AI security updates tracking AI's impact on security from threat detection to defense strategies; market intelligence on security vendors, funding rounds, and emerging technologies; and security tools for evaluation and program enhancement. Content includes coverage of topics such as APT attacks, zero-day vulnerabilities, AI exploitation, insider threats, data breaches, ransomware, cloud security incidents, malware campaigns, vulnerability disclosures, CISO compensation trends, security tool sprawl, and workforce challenges. Recent editions have covered incidents like Amazon detecting APT zero-days, Claude AI exploitation, Windows WSUS RCE attacks, AWS outages, Redis critical vulnerabilities, Red Hat GitLab breaches, and CrowdStrike npm attacks. The newsletter is used by security teams at organizations including Apple, Mastercard, Elastic, Palo Alto Networks, Zscaler, and SentinelOne. It serves over 1,200 security leaders and professionals, providing intelligence for board meetings, strategic planning, and security program development. The content is authored by Nikoloz Kokhreidze and focuses on the intersection of cybersecurity, AI, and leadership.