taco bell and kfc parent yum brands inc yum disclosed thursday that it was hit with a ransomware attack but said there is no evidence that customer databases were stolen the company said it took certain systems offline and is currently looking to fully restore affected systems which is expected to be largely completed “in the coming days” the restaurant chain operator said less than 300 restaurants in the united kingdom were closed for one day following the attack “while this incident caused temporary disruption the company is aware of no other restaurant disruptions and does not expect this event to have a material adverse impact on its business operations or financial results” yum said in a statement the stock which was still inactive in premarket trading has rallied 165 over the past three months while the sp 500 spx has tacked on 63