Henk Janssen is a professional in their field. They is proficient in German and English. Colleagues describe them as "I attended the Tippingpoint Advanced Technical course in Munich this year. Henk was our instructor and he held an awesome course for us. He impressed us with his knowledge of the Tippingpoint products and with his technical overall expertise. I would like to recommend Henk for any future employers. Best regards from Trond Sundby Security Advisor Aker universityhospital HF Norway" and "Henk has the uncanny ability to make everything involving complicated ICT equipment look disarmingly simple. Where others might simply work with the products, Henk brings in a level of mastery which allows him to really know what he's talking about and to communicate this more effectively to the people he's instructing his knowledge to. Henk has that knack every instructor inspires to have."