Deepwatch, managed security platform, adds retired Booz Allen Hamilton executive Bill Phelps to its board ... Paychex names WestCap Partners’ Beaumont Vance senior vice president-data, analytics and AI ... DeNexus, cyber risk modeling platform for industrial networks, names Iberdrola Group’s Rosa Kariger to its board ... MightyID, identity resilience solutions provider, appoints Vishal Amin, Microsoft Federal Defense general manager-security solutions, to its advisory board.