Amnesty International said that Google fixed previously unknown flaws in Android that allowed authorities to unlock phones using forensic tools. On Friday, Amnesty International published a report detailing a chain of three zero-day vulnerabilities developed by phone-unlocking company Cellebrite, which its researchers found after investigating the hack of a student protester’s phone in Serbia. The flaws were found in the core Linux USB kernel, meaning “the vulnerability is not limited to a parti...