Attackers can access Dropbox, Google Drive, OneDrive files without PW.

Alboari said:

I just realized how vulnerable we are, I will try to delete all cloud services, I feel so unsafe now

BillyBob said:

If you want to stay safe get rid of your router and buy all your programmes from a shop, oh and get rid of any smartphones and tablets.

@BillyBob - Seriously, that's about it in a nutshell.
@Alboari - Cloud services are not as vulnerable as you think. For instance, with the latest vulnerability, someone has to infiltrate your device to grab the "token" to access your cloud. So, #1 if you have 2-factor authentication enabled, you have just overcome this vulnerability, and, #2 if they've hacked your device, don't you think they'd want to grab everything and not just your token? Really, you can calm down, it's not as bad as it sounds. Keep your devices safe and your cloud should be safe. (Although, I admit, we have no control over the safety put in place by the cloud servers...)