Privacy

Explain the difference between a public profile and a private profile on a social network and name two advantages of keeping personal accounts private.

The figure shows the privacy settings panel of a social network.

Three settings are already configured and one appears undecided. Explain whether you consider the chosen options suitable for a minor and what option you would recommend for the setting marked with ?, justifying your answer.

List three specific privacy settings you would review on your main social network — for example, who sees your posts, who can tag you or who can find you by your phone number — and explain what each of them improves.

When installing a torch app, it requests access to your contacts and location. Explain why this request is suspicious, what privacy principle it violates by asking for more data than it needs, and what you would do.

A social network asks for a photo of your ID card "to verify your account and protect you". Analyse when this might be a legitimate request, what risks handing over an identity document entails and what you would check before sending it.

A shop offers a $10\ \%$ discount if you provide your email address and date of birth, and agree to receive "marketing communications". Evaluate that exchange using the data minimisation principle and write a reasoned decision: accept as is, negotiate the data you provide, or reject the offer.

The figure shows the locations that a person's mobile GPS recorded over a week.

Deduce what place the point marked with ? is and explain what other details that map reveals about the person's life (schedules, relationships, habits). Finish by explaining why location is one of the most sensitive pieces of data handled by your phone.

When entering a website, a cookie banner appears with the buttons "Accept all" and "Settings". Explain what types of cookies exist (necessary, preference, ad tracking) and what you are accepting with each button.

Having just turned 14, you request an online gaming platform to permanently delete your account and all your associated personal data. The company responds with this message:

"We have processed your request: your profile is no longer visible to other users. However, for permanent deletion from our servers, you must pay €5,00 in processing fees and attach an authorization signed by your legal guardians sent by post. In addition, we will retain your forum messages and your purchase history indefinitely for security purposes."

Analyze the situation by applying data protection regulations (GDPR and Spanish law):

1. Identify and justify at least two legal irregularities present in the platform's response.

2. Draft the formal reply you would send to the company to demand the effective exercise of your right to erasure without undue hindrance, indicating the legal deadline they have to comply with it and which official body you will file a complaint with if they do not.

Your younger brother uses your tablet while you are logged in and ends up buying a skin and talking to your friends. Explain what data and accounts of yours are exposed when sharing a device and what configuration (user profiles, lock screen, password-protected store) prevents this.

Explain in your own words what end-to-end encryption is in a messaging app and what it means that "not even the company itself can read your messages". What is the difference with a service that does store and can read conversations?

In your account settings, a list of "apps with access" appears. Explain what an app connected to your account can do, why it is advisable to revoke those you no longer use, and how often you would review that list.

In Spain, for certain online services, the law requires parental consent before fourteen years of age. Explain why this age limit exists, what happens to the data of a minor who lies about their date of birth when signing up, and why platforms ask for your age.

Analyse the phrase "if it's free, you're the product". Is it always true? Compare the business models of advertising, subscriptions and open-source software with donations, and explain how the chosen model affects how your data is treated.

Parental control apps allow parents to see their children's location, screen time and messages. Analyse where the balance lies between protection and trust depending on age, and propose a reasonable family agreement for a fourteen-year-old.