Challenge-gi.com is the website for Challenge Group, an insurance brokerage and risk management consulting firm that provides services globally. They offer insurance and reinsurance broking for various lines of business including property & casualty, construction, crop and specialty areas. Challenge Group also helps clients with captive solutions, risk management and company management consulting.
Some key information on the site includes an 'About Us' section describing their 15 years of experience working with clients worldwide. Contact details are clearly listed.
Challenge Group appears to be a legitimate international insurance and risk consulting firm based on information available on their website.