Phoebe Gates, 23, is accused of engaging in cookie stuffing at her startup Phia, a practice carrying a potential 20-year federal prison sentence, according to reports.

Phia, the shopping startup co-founded by Phoebe Gates and Sophia Kianni, is once again under fire for its alleged business practices.

Phoebe Gates and Sophia Kianni reportedly knew Phia engaged in cookie stuffing, a controversial practice revealed by Bloomberg's investigation earlier this year.