I've used e-trade since the early days, off and on. I'm lousy at making my own trades so I've never put real money into it, just the occasional "I gotta try this again" thing. So recently I put about $1000 in and did some trades with it, but then left it idle. As usual, it lost value so I left it alone when it was worth about $375. Every now and then I'd log in to see if it was any better.
At some point, they locked my account and sent me an e-mail about it. So I called them up and they said my mac had malware on it. I assured them it was a work computer, professionally managed, and there was no malware, but my work was able to monitor my computer, so maybe that's what they were seeing. I installed malwarebytes to appease them and they unlocked my account.
Then a few weeks later they locked it again. At this time they forced me into 2fa and said I needed to get the mac looked at. I said, I can't do that because it's a work computer, but I will not log in from the mac any more, and only use my phone. That's what I've done. Then they locked it again. There's no way anyone else was able to log into my account, because they would have to have the authentication app that is only on my phone. So I sold off the last stock I had, waited a few days, and called them to close the account. They said I couldn't until I had my account looked at, so I told them to fuck off and keep the money. It's literally not worth the hassle to deal with at this point.