Learn all about digital privacy

With every click, like, or sign-up, we leave digital traces that tell a lot about who we are. What many people don't realize is that this data isn't simply stored on our cell phones or computers: it's collected, analyzed, and often sold by technology companies, advertisers, and even unknown third parties. The issue of digital privacy has never been so important, and understanding what really happens with your information online is the first step to protecting yourself.

What is personal data online?

Personal data is any information that helps identify a person. This includes everything from name, CPF, and address to browsing habits, purchase history, real-time location, and consumer preferences. Much of this data is provided voluntarily, such as when we create a social media account, but other data is collected automatically through cookies and trackers.

This information is extremely valuable for companies that want to understand consumer behavior and target ads more precisely.

How your data is used

When you browse the internet, several types of data are collected:

  • Navigation cookies: track visited websites and preferences.
  • Location: apps and websites know where you are in real time.
  • Purchase history: shows your interests and purchasing power.
  • Social media interactions: reveal tastes, opinions and even relationships.

This data is organized into detailed profiles that help companies personalize ads and recommendations. The problem is that users don't always know exactly what information is being collected or how it will be used.

The positive side of data collection

There's no denying the benefits of this process. Who hasn't enjoyed receiving personalized movie, music, or product recommendations? Data makes the internet more practical and relevant to each user. Furthermore, it helps improve security, as many platforms use artificial intelligence to identify suspicious behavior and prevent fraud.

The risks to privacy

On the other hand, over-collection and misuse of data pose serious risks:

  • Leaks: exposed databases may reveal sensitive information.
  • Digital scams: criminals use data to commit fraud.
  • Lack of control: we often don't know where our data is stored.
  • Manipulation: information collected may be used to influence purchasing or even political decisions.

These risks highlight the importance of being mindful of the permissions granted to apps and websites we trust with our information.

What does the law say about digital privacy?

In Brazil, the General Data Protection Law (LGPD) establishes clear rules on how companies and organizations can collect and process personal data. Key user rights include:

  • Know how your data is being used.
  • Request deletion of personal information.
  • Correct incorrect data.
  • Require the company to share what information it has about you.

The law represents an important step forward, but the responsibility also lies with the user, who needs to be aware of their digital practices.

How to protect your data online

There are simple steps you can take to increase your digital privacy:

  • Use strong passwords and two-factor authentication.
  • Review app permissions on your phone.
  • Avoid clicking on suspicious links.
  • Use browsers and extensions that block trackers.
  • Prefer applications that respect privacy, such as Octo Browser, created precisely to guarantee anonymous and secure browsing.

These practices reduce the risk of unnecessary exposure and give users more control over their digital lives.

A digital privacy It's not just a technical matter, but one that directly affects our daily lives. Knowing what happens to your online data is essential for using the internet consciously and safely. By adopting protective measures and knowing your rights, you can ensure greater peace of mind in the digital world.

The future of technology is increasingly connected, but that doesn't mean giving up your freedom. The secret is simple: information and prevention. After all, your data is valuable, and no one should take better care of it than you.

See also: Get to know the technology that employs the most in the market 

Published on September 21, 2025