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DOSarrest Management Team

DOSarrest has assembled an experienced team of network engineers, software developers, Sales and Customer service people. All of our dedicated people have the same goal in mind. That goal is simple, offer the best technology and couple it with the best customer service.

Mark Teolis

Mark Teolis


Prior to founding DOSarrest in October 2007, Mark was a co-founder of Peer1 Hosting and held a number of positions within Peer1until late 2007 including CTO and VP of co-location and network. While at Peer1 Mark created and lead the company's strategic technical plan that made it the 4th fastest growing public company in Canada in 2005. Peer1 was later sold to Cogeco Cable in 2012 for 525 million USD. Mark holds a Bachelor of Science degree from Concordia University in Montreal.

Jag Bains

Chief Technology Officer

A 17 year veteran in the internet service provider arena, Jag Bains has extensive network design experience as well as implementing a number of security platforms. In his previous position as the Director of Network Engineering and Operations for PEER1 Hosting Jag was able to observe a large number of DDoS attacks against their customer base, and came to appreciate the singular focus needed to combat the evolving nature of these attacks. Jag holds a Bachelor of Science degree in Information Science from the University of Victoria, in British Columbia.

Mark Teolis
Mark Teolis

Sean Power

Senior Application Security Architect

Sean has 15 years of experience in the field of information security as an Analyst, Security Engineer, Manager of Security Operations, and for the last 3 years as a Solutions Architect at DOSarrest Internet Security where he has designed individualized mitigation strategies for hundreds of companies and managed thousands of attacks. Sean has a bachelors degree in Computing Science from Thompson Rivers University in British Columbia.

Jenny Wong

Director of Customer Care

Since joining DOSarrest's management team in 2012 Jenny has steadily increased her role within DOSarrest that now includes being responsible for the 24/7 Security Operations Center (SOC), customer care and sales support staff. She also provides guidance to the software development group to ensure its aligned with our customers’ requirements.

Mark Teolis

Mike Gordon

Business Development - Europe

Mike heads up European Business Development within DOSarrest and brings over 25 years of IT, software and network security sales experience to the team. Many of these have included recruiting and developing partners throughout the UK and Europe. Having held senior roles at vendor, distributor and reseller level he is vastly experienced in solution sales, product marketing and channel development.