A member of China's intelligence services, the Ministry of State Security (MSS), was an employee of Twitter, according to testimony from a whistleblower appearing before Congress today. The whistleblower also testified that the company doesn't care about having foreign spies working within its walls, with one executive telling him: 'Well, since we already have one, who cares if we have one? more ?" Peiter Zatko, who until recently was Twitter's chief security officer, also said there were concerns within the company that the Chinese government could collect data on users of the platform while that he was looking for business…