The ex-chief of security at Twitter has heavily criticized the company for its failures in security and privacy. He suggests that the conduct of the social media behemoth poses a significant threat to national security. An 84-page report from a whistleblower has recently come to light, submitted to the US government by Peiter “Mudge” Zatko, Twitter’s ex-chief of security. The report, filed last month, criticizes his previous employer for their supposedly inadequate security measures and for not adhering to an …