Their site certification is fully legit, and was issued by DST Root CA X3.
They are also listed on the stock exchange as a public entity under VGW (Virtual Gaming Worlds). As a United States social casino, it is fully licensed and regulated by the Malta Gaming Authority (MGA) under their social casino guidelines and regulations. Chumba casino understands that even as a social casino, it needs to keep its gambling site secure for many of the resting players stopping off to play for some fun.