Cloud sync is convenient, but your files pass through networks you do not control. Here is how to keep them private in transit and at rest.
Files synced to the cloud travel across whatever network you are on and sit on servers you do not own. Convenient, yes — but a weak link if the connection or the account is exposed.
Lock it down
Turn on two-factor authentication, consider encrypting sensitive files before they upload, and always sync over a VPN. On public WiFi especially, a tunnel stops anyone from intercepting your files as they move.
