https://www.reuters.com/article/snap-results/snap-shares-plunge-25-as-apple-privacy-changes-hit-ads-business-idUSKBN2HB2JV >(Reuters) -Shares of Snap Inc plummeted 25% on Thursday after the owner of photo messaging app Snapchat said privacy changes implemented by Apple Inc on iOS devices hurt the company's ability to target and measure its digital advertising.