UBS is on trial in Paris for allegedly harassing whistleblowers, including former auditor Nicolas Forissier, who exposed the bank's efforts to assist wealthy French clients in tax evasion. Forissier and a marketing manager faced retaliation, including bonus cuts and dismissal. UBS's chairman denied wrongdoing, attributing the bank's issues to the 2007-2008 financial crisis, a claim Forissier refuted, stating the wealth management division remained profitable. A conviction could result in a fine and potential operational bans for UBS France.