In June 22, 2018 Sony Pictures announced a spin-off movie starring Silk (Cindy Moon). Cindy appeared in Spiderman: Homecoming (2017). She was in decathlon team played by Tiffany Espensen. No word yet if she will reprise that role.
Cindy Moon first appeared in Amazing Spiderman #1 (April 2014) created by Dan Slott and Humberto Ramos. Silk made her first appearance in Amazing Spiderman #4 (July 2014) by the same creative team. Silk had her ongoing title in February 2015. She has most of the abilities that Spiderman has. One thing she has is organic webbing that Spiderman doesn’t have.
A recent copy of Amazing Spiderman #4 CGC 9.9 sold for $999.99.