Shopping startup Phia, co-founded by Phoebe Gates and Sophia Kianni, faces allegations of “cookie stuffing,” according to reporting including a Bloomberg investigation cited by other outlets. The claims center on how Phia’s browser extension may handle affiliate tracking and commission attribution. Critics allege that the extension replaces or interferes with existing affiliate links and, as a result, causes purchases to be credited to Phia even when Phia did not drive those transactions. The disputed practice is described as taking commission credit for sales the product did not actually earn. Phia is reportedly accused of receiving commissions through the affiliate tracking mechanism by setting or overwriting cookies associated with purchases. The coverage frames the issue as a dispute over whether the extension’s behavior improperly redirects referral attribution, potentially affecting merchants and other affiliate partners. The reports do not indicate a final determination of wrongdoing, but they describe the allegations and the investigation’s findings and characterization of the conduct as cookie stuffing.