It has occurred to me that a group of resistance people could intentionally seek to be hired in these orgs and sandbag them. Do a decent job for a bit, gain trust, then turn and leak stuff, make poor decisions, slow things down… Would require a lot of dedication and support though, before and after – plausible backgrounds to get hired, and later on, since it would at some point involve getting fired or quitting, a need for somewhere for these people to land afterwards, career-wise.