AST SpaceMobile, space-based cellular broadband network company, hires 3D Systems’ Andrew Johnson as chief legal officer ... Lumen Technologies appoints Sabre’s Chad Ho as executive vice president-chief legal officer, effective next month; he succeeds Stacey Goff, remaining “a few weeks” for transition … Vsora AI chip startup announces former Stimio CEO David Dorval as vice president-operations and test …Cyemptive Technologies, cybersecurity solutions provider for business and government, names former IBM and Hitachi executive Wessel Graatsma vice president-cybersecurity solutions, Europe ... Searchlight Cyber, dark web intelligence company, names Tim Warner, ex-Zscaler, vice president-global enterprise sales ... Blue Sky Networks becomes part of NAL Research with NAL President Robert Bills leading the combined company ... MwareTV cloud-based multitenant platform provider taps Daniel Conde Coto, ex-Emergent, as director-sales operations.

Newly named to Cybersecurity and Infrastructure Security Agency’s Cyber Safety Review Board: Jamil Jaffer, executive director, National Security Institute, George Mason University's Scalia Law School; David Luber, NSA director-cybersecurity directorate; Katie Nickels, Red Canary director-intelligence operations; and Chris Krebs, SentinelOne chief intelligence and public policy officer; retiring NSA Cybersecurity Director Rob Joyce, whom Luber replaces on the review board, to continue serving on the board as a private sector member ... Cohu, semiconductor equipment and manufacturing services company, adds Karen Rapp, retired former National Instruments chief financial officer, to its board.