The Off-Facebook Activity tool reveals which websites send information about your online activities to the social network, while Facebook's Privacy Checkup helps tighten privacy.
To find you whether you were ensnared in the Facebook data leak, don't rely on the social network. Instead, you'll have to use a third-party website, which can also be problematic.
Dr. Dawn Song, founder and CEO of privacy start-up Oasis Labs, says the current internet infrastructure is broken and that emerging technologies need to be in place for a post-pandemic future.