Bruce Schneier is a cybersecurity evangelist who is on his game. I’ve read his book Secrets and Lies: Digital Security in a Networked World and I highly recommend it. Keeping current on his blog and his writing definitely should be a mandatory tool in your toolkit to help with the decision making process.
Below is a link to getting trapped with terms of service. What are you actually agreeing to when you use a tool for personal or actual business work?
https://www.schneier.com/blog/archives/2012/12/terms_of_servic.html