Account security reduces unauthorised access. Privacy also concerns collection, sharing and use during ordinary, authorised use. The Digital Security & Privacy course covers sign-in, recovery and file restoration; this optional follow-on examines tracking choices. Neither course promises an invisible or unbreakable digital life.

A free service might be funded by adverts, subscriptions elsewhere, grants or investors. Its price alone does not establish whether it sells data. A targeted advert also does not reveal which particular data source caused it. Start with the information collected and the parties receiving it.