https://www.theguardian.com/business/2023/nov/04/sam-bankman-fried-guilty-verdict-explained

Jury did not believe T-shirt, cargo shorts and messy hair could prevent someone defrauding people out of billions of dollars

For several years, Sam Bankman-Fried cut the figure of an unstoppable tech founder. With his trademark uniform of a T-shirt and shorts, and a mop of dark curls, Bankman-Fried courted investors big and small with promises that FTX, the cryptocurrency exchange he founded, was safer than all its competitors. He vowed there was an insurance fund to protect investors. He claimed there was a safeguard preventing accounts from margin trading if they lacked sufficient liquidity.