The CEO of Signal is squaring up to Cellebrite, a company that helps cops hack into locked phones, claiming its software is full of security flaws

Signal CEO Moxie Marlinspike published a security analysis of Cellebrite's software. Cellebrite is a company that specializes in breaking into locked phones, and is used by law enforcement. Marlinspike says he found Cellebrite's software was full of exploitable vulnerabilities. See more stories on Insider's business page.