When news broke this week that Google was letting Gmail app developers scan and even read your email, we heard what's become Silicon Valley's usual excuse: This is what you signed up for.
Google allows users to connect third-party services to their accounts, and it's here the problems arise. In other words: if you grant a company access to your email data, it may be that human employees read it.
The three groups are apps that allow for "Signing in with Google", "Third-party apps with account access", and "Google apps". This will show you which apps you have linked to your account, and let you revoke any you don't want to share the contents of your messages with.
The Wall Street Journal reported on Monday that employees working with hundreds of software developers are capable of reading your private messages you send from Gmail.
Ostensibly, Google only allows vetted third-party developers to request such permissions, and the intention of these companies is to use this information for targeted shopping suggestions and advertising, but the concern remains over how closely these companies are monitored once they've been granted access. To develop its products like the "Smart Reply' feature, Edison Software has read thousands of emails". All the top tech companies are under pressure in the United States and in Europe to do more to protect user privacy and to be more transparent about any parties with access to people's data.
In Google's case, outside developers must pass a vetting process, and as part of that process, Google makes sure that they have an acceptable privacy agreement. "Just like Facebook, Google bears responsibility for the misuse of personal data by app developers".
You may need to research each individual program or service to make an educated decision.
You can remove access for any service or application listed on the page and should do so for any that you don't use.