Which Duggar family member was involved with Ashley Madison?

Josh Duggar was the member of the prominent Duggar family who became embroiled in a scandal involving Ashley Madison, a website catering to those seeking extramarital affairs. In August 2015, it was revealed that Josh had allegedly used the site to seek affairs, and he subsequently issued an apology for his infidelity as well as his pornography addiction. This controversy arose after Josh Duggar's earlier molestation allegations became public, both situations garnering significant media attention and reflecting upon the family known for their reality TV show "19 Kids and Counting." The Ashley Madison incident contributed to the cancellation of the show by TLC, which substantially reduced the family's presence in the public eye.