Yep, such as Cisco which helps China, to quote Cisco's pitch slides, "combat ‘Falun Gong’ evil religion and other hostiles" (https://www.wired.com/2008/05/leaked-cisco-do ; https://www.wired.com/images_blogs/threatlevel/files/cisco_p... (PDF)).
I worked in an F50 that sold services, and we were constantly having to 'help' countries like Tunisia, Kazakstan etc. do some things we didn't want them to do, we tried to steer clear of being involved but we could not in some circumstances. But it wasn't that bad, it was mostly porn filtering and such.
There's no way I would name the company, it would be a breach of confidentiality. If there was something tantamount to whistle-blowing, possibly, but there was nothing illegal going on.
"What is F50?"
'Fortune 50'