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Children and their digital footprint: prevention and guidance to reduce online risks
Everyday activity on the internet leaves traces that can reveal personal information, habits, relationships, interests or locations. For children, managing this digital footprint helps reduce exposure and prevent risky situations online.
What is a digital footprint and why does it affect children?
A digital footprint encompasses the data a person generates when using digital services: websites visited, social media posts, photographs, comments, online purchases, platform registrations, emails or privacy settings, among others.
This data is often shared in fragments and without a full awareness of its implications. When combined, it can provide an accurate picture of a person's life: routines, contacts, frequently visited places or preferences.
For children and teenagers, this exposure can facilitate unwanted interactions, expose sensitive information or enable behaviours such as online harassment, identity theft or contact for abusive purposes.
It is therefore important to bear in mind that cybercrime is not limited to technical attacks, such as credential theft, data hijacking or service disruption. It also includes social behaviours that have moved into the digital environment, such as harassment, persistent intimidation or contacting children for abusive purposes.
■ Recent reports on cybercrime and cybersecurity, such as Europol's IOCTA 2026 and data from Better Internet for Kids, reflect growing concern about online risks affecting children and teenagers. These include an increase in reports relating to child sexual abuse or exploitation material, sextortion and the emergence of synthetic content generated using AI.
A child's digital footprint can reveal more information than it might seem and increase their online exposure.
Prevention and guidance: key aspects of reducing online exposure
Some harmful behaviours in the digital environment tend to occur when three factors coincide:
- A person who tries to take advantage of the information available.
- A child who shares personal data or has public profiles.
- A lack of guidance, supervision or privacy measures.
■ Self-protection and privacy directly affect the level of exposure. Sharing personal data, images, routines or frequently visited places can facilitate unwanted contact or attempts at manipulation.
When applying self-protection measures to social media, it is important to review public accounts, identifiable posts, photographs containing metadata, references to schools or regular activities, and any content that could be used to reconstruct patterns of behaviour. Technology helps, but digital education, caution when sharing information and adult guidance remain essential.
These situations can affect children's emotional, social and psychological wellbeing. This is why prevention helps reduce vulnerability and develop digital self-protection skills.
Prevention combines privacy, caution when sharing information and consistent adult guidance.
Digital self-protection and the gap between children and adults
As children gain access at increasingly younger ages to devices, applications and social media, they often do so without the knowledge needed to understand the risks involved. In addition, they do not always have sufficient maturity, information or perspective to assess the consequences of what they post or share.
The digital divide between children and adults can also make prevention more difficult. Families and educators are not always familiar with the platforms, dynamics and forms of interaction used by teenagers, making it more difficult to identify risks early. For this reason, responsibility for prevention should not fall solely on the child. Families, schools and trusted adults should support children's use of the internet through open conversations, shared guidelines and a relationship of trust that makes it easier for them to ask for help.
Children need digital self-protection skills, while adults need to keep their knowledge up to date so they can provide better guidance.
Measures to protect children online
Prevention needs to translate into specific habits that are easy to put into practice. Some important measures include:
- Review profile privacy settings. Set accounts to private whenever possible, limit who can see posts and stories, and regularly review the permissions granted to applications and services.
- Reduce visible personal information. Avoid publishing data that could reveal routines, locations, schools, regular activities, schedules or social circles.
- Think before posting images or videos. Consider whether the content reveals sensitive information, includes other people or could be reused outside its original context.
- Talk openly about digital risks. Have regular conversations about online harassment, identity theft, contact with strangers, social pressure and inappropriate requests.
- Encourage digital self-protection skills. Help children identify warning signs, block or report suspicious behaviour, and ask for help without fear of being punished.
- Provide guidance without being intrusive. Supervise internet use in a way that is appropriate to the child's age and maturity, combining clear boundaries, trust and dialogue.
- Keep digital knowledge up to date. Families and educators should be familiar with the most commonly used platforms, dynamics and forms of interaction so they can provide better guidance and identify risks in good time.
■ These measures do not eliminate risk entirely, but they help reduce exposure, encourage reflection and make it more difficult for third parties to use personal information for harmful purposes. Protecting children online requires education, guidance, digital caution and shared responsibility among families, schools, technology professionals and society.
Protecting children online starts with simple habits: privacy, dialogue, clear boundaries and regular supervision.
Conclusion
Protecting children online does not depend on a single measure, but on a sustained combination of education, guidance and responsible habits. Understanding how a digital footprint is created helps anticipate risks, reduce exposure and promote safer use of the online environment. Therefore, prevention does not mean limiting children's digital lives, but giving them the skills to participate in them more consciously and safely.
Education and guidance can reduce risks without limiting children's participation in digital life.
