Don’t leak. Spread seldom rumours online about the company with plausible deniability. Find a crazy-er person and/or group. Continue spreading dots. Spread info to Youtubers. Others with a platform. Use a VM, a password manager inside the VM. After 12 months, delete all your credentials and the VM. The system can not protect you. Corps rule democracy. Don’t trust the system. Spread the info until it reaches critical mass or the faith in the system collapses. Your life is worth more than some righteous leak. See the Pentagon Papers life. He lived a very humble life afterwards.

NOTE: method untested and invented just now.

Guest add-ons are free AFAIK. VirtualBox Extension Pack is not.