Behavioral biometrics expert BioCatch brought on a new team member today. The company appointed Bill Sytsma as Chief Revenue Officer.

Sytsma is a 20-year veteran of the software and security industry. Most recently, he served as a vice president of sales at ThreatMetrix. In addition to that role, Sytsma has worked at Emulex, iPass, Aveksa, Lumigent Technologies, and EMC.

“As we accelerate our plans for growth, Bill is the ideal person to lead the effort,” said BioCatch CEO Howard Edelstein. “He has vast experience as well as a proven ability to scale global sales efforts, secure new client relationships and drive revenue, exactly what is needed to enhance the results generated by our seasoned and talented team to date.”

The appointment of Sytsma is the latest in a recent string of C-level appointments for Israel-based BioCatch. Last year, the company named Gadi Mazor COO and Paul Mattison CFO.

BioCatch’s technology works by embedding what the company calls Invisible Challenges into online and mobile user experiences. The challenges are a set of subtle tests that the user subconsciously responds to. The user’s responses help to distinguish themselves over a fraudulent person or bot without interrupting the user experience.

BioCatch has raised $41.6 million since it was founded in 2011. At FinovateFall 2014, the company’s cofounder Uri Rivner demoed how some of the Invisible Challenges work.