SpeedCast International Limited announced that Sebastien Lehnherr is joining the company as Chief Operating Officer. Most recently Lehnherr oversaw cybersecurity for Schlumberger worldwide as Chief Information Security Officer. Lehnherr previously held numerous operational leadership roles at Schlumberger, the world's leading oilfield-services company. At Schlumberger, Lehnherr was responsible for delivering global communications and information technology infrastructure and services including to some of the most remote and harsh places on earth, supporting critical business workflows and software applications for the company. Most recently Lehnherr oversaw cybersecurity for Schlumberger worldwide as Chief Information Security Officer.