Amnesty International said Apple’s marketing claims about its superior security and privacy had been ripped apart by the discovery of vulnerabilities in even the most recent versions of its iPhones and iOS software. Security researchers said Apple could do more to tackle the problem by working with other tech companies to share details about vulnerabilities and vet their software updates. Apple insisted that it did collaborate with external security researchers but chose not to publicize the activities, which included paying out millions of dollars a year in security bounty rewards for spotting vulnerabilities.”]