Anyone working for a SRO or company in the wecurities business is prohibited from using personal email for business - it's mandated by......the government. The same government that could care less that national security content is emailed around on private servers and personal accounts, Oh the hypocrisy and double standards. This is liberalsism, a ruling elite with no laws and everyone else.
We were subcontracted to NASA and on occasion we dealt with classified material. Can’t say what level though. :>}