Their terms may have changed after they were acquired, I dunno. But Atlassian has something like two dozen different legal documents covering their software. How do you know what they do/don't do until you've had your legal department vet it?
As a random example: Trello can list any customer in their promotional materials (you have to dig through the legal docs to find the opt-out email). As the CEO of your own company, how would you like to see your company listed in a Trello ad when you're trying to do business with a Trello competitor, or gain a customer who competes with Trello?
Point being: employees use 3rd parties all the time in ways they shouldn't, often leaking a lot more data than meetings. It's why DLP is so popular.
Exactly, which is why you need to consider this stuff and not use those types of services if you have actual confidential data. Find a provider with clear contracts that prevent these types of changes. Self host. Whatever, just make sure to pay actual attention to what you're doing.
As a random example: Trello can list any customer in their promotional materials (you have to dig through the legal docs to find the opt-out email). As the CEO of your own company, how would you like to see your company listed in a Trello ad when you're trying to do business with a Trello competitor, or gain a customer who competes with Trello?
Point being: employees use 3rd parties all the time in ways they shouldn't, often leaking a lot more data than meetings. It's why DLP is so popular.