Comtech hires Jeff Robertson, ex-Intrado Life Safety, as president of its terrestrial and wireless networks business segment ... Tencent Music Entertainment Group announces resignation of Zhenyu Xie as president and chief technology officer, and names Chief Financial Officer Shirley Hu to replace him on Tencent’s board, both effective March 31; Xie will remain a Tencent consultant ... Secureworks adds former General Electric executive William Cary to its board ... Contentsquare names Gabriel Benavides, ex-Medallia, global chief revenue officer ... PA Media Group promotes Emily Shelley to CEO, replacing Clive Marshall, retiring ... Abnormal Security, AI-native cloud email security company, taps Okta’s Smita Sanadhya, also former HP and Microsoft, as CFO, and Jeff True, ex-Zoom, as chief legal officer.