I was consulting at a big 4 IB once. My company used Slack for ourselves, but were onboarded the client's chat tools and told to use them for all project commun

I was consulting at a big 4 IB once. My company used Slack for ourselves, but were onboarded the client's chat tools and told to use them for all project communication which we mostly did. One time a coworker sent me an IM saying he'd follow up with me on Slack. The compliance team flagged it and came after me (not sure why me and not the guy who sent the message). They asked if I discussed company business on Slack and I, not wanting to lie and not wanting to stay on an account that was a meat grinder, just said "yes". They never followed up and I worked on that account for like 8 more months.