Former Flatiron School cybersecurity instructor and solo attorney Joseph Gawlowicz joins Mullen Coughlin as an associate-incident response practice … Optimum appoints as vice presidents-general managers Kathleen Preston, from Cox Communications, for West Pacific Area, Elton Hart, ex-Comcast Business, for Mid Atlantic Area, and Vic Pascarelli, ex-Comcast, for Northeast Area; it also moves Michael Shaffer to vice president-GM, Mid Central Area … Cogeco names former Bell Canada executive Tim Dinesen senior vice president-chief technology officer ...

Panasas, data solutions company, names Seagate Technology’s Ken Claffey CEO, replacing Tom Shea, staying as COO ... Empower Media names Meta’s Yating Sun executive vice president and head-marketing science, and GroupM’s Art Zambianchi, also ex-Motorola Mobility, chief operating officer ... Industrial AI company Nanotronics names Eco’s Peter Hopkins president ... Stream Data Centers names former Navy Lt. Cmdr. Jose Ruiz, from Equinix, senior vice president-global accounts and platform strategy, newly created role ... Cyemptive Technologies, cybersecurity solutions company, taps Vince Dova, former Joint Chiefs of Staff branch chief-cyber policy and capabilities, as vice president-security ...Magnachip Semiconductor announces resignation of board member Mel Keating, effective immediately.