After dropping out of college, Lim founded BitMitigate in 2017 in Vancouver, Washington, when he was nineteen years old. The company provided website security services, including protection from DDoS attacks. Beginning in August 2017, BitMitigate provided security services to "The Daily Stormer", a neo-Nazi website which had just been denied service by Cloudflare after publishing an article mocking Heather Heyer, the victim of a vehicle ramming attack at the white supremacist Unite the Right rally in Charlottesville, Virginia earlier that month. Lim contacted "The Daily Stormer's" founder, Andrew Anglin, after hearing he was having trouble staying online, and offered him free use of BitMitigate's services. Lim told ProPublica in August 2017 that he thought offering services to "The Daily Stormer" "would really get my service out there". In 2018, Lim began to be mentored by Rob Monster, the founder and CEO of the web services company Epik.