This post was written by EFF fellow Miranda McClellan.

Teens between the ages of  13 and 17 are being tracked across the internet using identifiers known as Advertising IDs. When children turn 13, they age out of the data protections provided by the Children’s Online Privacy Protection Act (COPPA). Then, they become targets for data collection from data brokers that collect their information from social media apps, shopping history, location tracking services, and more. Data brokers then process and sell the data. Deleting Advertising IDs off your teen’s devices can increase their privacy and stop advertisers collecting their data.

What is an Advertising ID?

Advertising identifiers – Android's Advertising ID (AAID) and Identifier for Advertising (IDFA) on iOS – enable third-party advertising by providing device and activity tracking information to advertisers. The advertising ID is a string of letters and numbers that uniquely identifies your phone, tablet, or other smart device.

How Teens Are Left Vulnerable

In most countries, children must be over 13 years old to manage their own Google account without a supervisory parent account through Google Family Link. Children over 13 gain the right to manage their own account and app downloads without a supervisory parent account—and they also gain an Advertising ID.

At 13, children transition abruptly between two extremes—from potential helicopter parental surveillance to surveillance advertising that connects their online activity and search history to marketers serving targeted ads.

Thirteen is a historically significant age. In the United States, both Facebook and Instagram require users to be at least 13 years old to make an account, though many children pretend to be older. The Children’s Online Privacy Protection Act (COPPA), a federal law, requires companies to obtain “verifiable parental consent” before collecting personal information from children under 13 for commercial purposes.

But this means that teens can lose valuable privacy protections even before becoming adults.

How to Protect Children and Teens from Tracking

 Here are a few steps we recommend that protect children and teens from behavioral tracking and other privacy-invasive advertising techniques:

• Delete advertising IDs for minors aged 13-17.
• Require schools using Chromebooks, Android tablets, or iPads to educate students and parents about deleting advertising IDs off school devices and accounts to preserve student privacy.
• Advocate for extended privacy protections for everyone.

How to Delete Advertising IDs

 Advertising IDs track devices and activity from connected accounts. Both Android and iOS users can reset or delete their advertising IDs from the device. Removing the advertising ID removes a key component advertisers use to identify audiences for targeted ad delivery. While users will still see ads after resetting or deleting their advertising ID, the ads will be severed from previous online behaviors and provide less personally targeted ads.

Follow these instructions, updated from a previous EFF blog post:

On Android

With the release of Android 12, Google began allowing users to delete their ad ID permanently. On devices that have this feature enabled, you can open the Settings app and navigate to Security & Privacy > Privacy > Ads. Tap “Delete advertising ID,” then tap it again on the next page to confirm. This will prevent any app on your phone from accessing it in the future.

The Android opt out should be available to most users on Android 12, but may not available on older versions. If you don't see an option to "delete" your ad ID, you can use the older version of Android's privacy controls to reset it and ask apps not to track you.

On iOS

Apple requires apps to ask permission before they can access your IDFA. When you install a new app, it may ask you for permission to track you.

Select “Ask App Not to Track” to deny it IDFA access.

To see which apps you have previously granted access to, go to Settings > Privacy & Security > Tracking.

In this menu, you can disable tracking for individual apps that have previously received permission. Only apps that have permission to track you will be able to access your IDFA.

You can set the “Allow apps to Request to Track” switch to the “off” position (the slider is to the left and the background is gray). This will prevent apps from asking to track in the future. If you have granted apps permission to track you in the past, this will prompt you to ask those apps to stop tracking as well. You also have the option to grant or revoke tracking access on a per-app basis.

Apple has its own targeted advertising system, separate from the third-party tracking it enables with IDFA. To disable it, navigate to Settings > Privacy > Apple Advertising and set the “Personalized Ads” switch to the “off” position to disable Apple’s ad targeting.

Miranda McClellan served as a summer fellow at EFF on the Public Interest Technology team. Miranda has a B.S. and M.Eng. in Computer Science from MIT. Before joining EFF, Miranda completed a Fulbright research fellowship in Spain to apply machine learning to 5G networks, worked as a data scientist at Microsoft where she built machine learning models to detect malware, and was a fellow at the Internet Society. In her free time, Miranda enjoys running, hiking, and crochet.

At EFF, Miranda conducted research focused on understanding the data broker ecosystem and enhancing children’s privacy. She received funding from the National Science Policy Network.

The post was written by Laura Vidal (PhD), independent researcher in learning and digital rights.

This is part two of a series. Part one on surveillance and control around the July election is here.

Over the past decade, the government in Venezuela has meticulously constructed a framework of surveillance and repression, which has been repeatedly denounced by civil society and digital rights defenders in the country. This apparatus is built on a foundation of restricted access to information, censorship, harassment of journalists, and the closure of media outlets. The systematic use of surveillance technologies has created an intricate network of control.

Security forces have increasingly relied on digital tools to monitor citizens, frequently stopping people to check the content of their phones and detaining those whose devices contain anti-government material. The country’s digital identification systems, Carnet de la Patria and Sistema Patria—established in 2016 and linked to social welfare programs—have also been weaponized against the population by linking access to essential services with affiliation to the governing party. 

Censorship and internet filtering in Venezuela became omnipresent ahead of the recent election period. The government blocked access to media outlets, human rights organizations, and even VPNs—restricting access to critical information. Social media platforms like X (formerly Twitter) and WhatsApp were also  targeted—and are expected to be regulated—with the government accusing these platforms of aiding opposition forces in organizing a “fascist coup d’état” and spreading “hate” while promoting a “civil war.”

The blocking of these platforms not only limits free expression but also serves to isolate Venezuelans from the global community and their networks in the diaspora, a community of around 9 million people. The government's rhetoric, which labels dissent as "cyberfascism" or "terrorism," is part of a broader narrative that seeks to justify these repressive measures while maintaining a constant threat of censorship, further stifling dissent.

Moreover, there is a growing concern that the government’s strategy could escalate to broader shutdowns of social media and communication platforms if street protests become harder to control, highlighting the lengths to which the regime is willing to go to maintain its grip on power.

Fear is another powerful tool that enhances the effectiveness of government control. Actions like mass arrests, often streamed online, and the public display of detainees create a chilling effect that silences dissent and fractures the social fabric. Economic coercion, combined with pervasive surveillance, fosters distrust and isolation—breaking down the networks of communication and trust that help Venezuelans access information and organize.

This deliberate strategy aims not just to suppress opposition but to dismantle the very connections that enable citizens to share information and mobilize for protests. The resulting fear, compounded by the difficulty in perceiving the full extent of digital repression, deepens self-censorship and isolation. This makes it harder to defend human rights and gain international support against the government's authoritarian practices.

Civil Society’s Response

Despite the repressive environment, civil society in Venezuela continues to resist. Initiatives like Noticias Sin Filtro and El Bus TV have emerged as creative ways to bypass censorship and keep the public informed. These efforts, alongside educational campaigns on digital security and the innovative use of artificial intelligence to spread verified information, demonstrate the resilience of Venezuelans in the face of authoritarianism. However, the challenges remain extensive.

The Inter-American Commission on Human Rights (IACHR) and its Special Rapporteur for Freedom of Expression (SRFOE) have condemned the institutional violence occurring in Venezuela, highlighting it as state terrorism. To be able to comprehend the full scope of this crisis it is paramount to understand that this repression is not just a series of isolated actions but a comprehensive and systematic effort that has been building for over 15 years. It combines elements of infrastructure (keeping essential services barely functional), blocking independent media, pervasive surveillance, fear-mongering, isolation, and legislative strategies designed to close civic space. With the recent approval of a law aimed at severely restricting the work of non-governmental organizations, the civic space in Venezuela faces its greatest challenge yet.

The fact that this repression occurs amid widespread human rights violations suggests that the government's next steps may involve an even harsher crackdown. The digital arm of government propaganda reaches far beyond Venezuela’s borders, attempting to silence voices abroad and isolate the country from the global community. 

The situation in Venezuela is dire, and the use of technology to facilitate political violence represents a significant threat to human rights and democratic norms. As the government continues to tighten its grip, the international community must speak out against these abuses and support efforts to protect digital rights and freedoms. The Venezuelan case is not just a national issue but a global one, illustrating the dangers of unchecked state power in the digital age.

However, this case also serves as a critical learning opportunity for the global community. It highlights the risks of digital authoritarianism and the ways in which governments can influence and reinforce each other's repressive strategies. At the same time, it underscores the importance of an organized and resilient civil society—in spite of so many challenges—as well as the power of a network of engaged actors both inside and outside the country. 

These collective efforts offer opportunities to resist oppression, share knowledge, and build solidarity across borders. The lessons learned from Venezuela should inform global strategies to safeguard human rights and counter the spread of authoritarian practices in the digital era.

An open letter, organized by a group of Venezuelan digital and human rights defenders, calling for an end to technology-enabled political violence in Venezuela, has been published by Access Now and remains open for signatures.

The post was written by Laura Vidal (PhD), independent researcher in learning and digital rights.

This is part one of a series. Part two on the legacy of Venezuela’s state surveillance is here.

As thousands of Venezuelans took to the streets across the country to demand transparency in July’s election results, the ensuing repression has been described as the harshest to date, with technology playing a central role in facilitating this crackdown.

The presidential elections in Venezuela marked the beginning of a new chapter in the country’s ongoing political crisis. Since July 28th, a severe backlash against demonstrations has been undertaken by the country’s security forces, leading to 20 people killed. The results announced by the government, in which they claimed a re-election of Nicolás Maduro, have been strongly contested by political leaders within Venezuela as well as by the Organization of American States (OAS),  and governments across the region. 

In the days following the election, the opposition—led by candidates Edmundo González Urrutia and María Corina Machado—challenged the National Electoral Council’s (CNE) decision to award the presidency to Maduro. They called for greater transparency in the electoral process, particularly regarding the publication of the original tally sheets, which are essential for confirming or contesting the election results. At present, these original tally sheets remain unpublished.

In response to the lack of official data, the coalition supporting the opposition—known as Comando con Venezuela—presented the tally sheets obtained by opposition witnesses on the night of July 29th. These were made publicly available on an independent portal named “Presidential Results 2024,” accessible to any internet user with a Venezuelan identity card.

The government responded with repression and numerous instances of technology-supported repression and violence. The surveillance and control apparatus saw intensified use, such as increased deployment of VenApp, a surveillance application originally launched in December 2022 to report failures in public services. Promoted by President Nicolás Maduro as a means for citizens to report on their neighbors, VenApp has been integrated into the broader system of state control, encouraging citizens to report activities deemed suspicious by the state and further entrenching a culture of surveillance.

Additional reports indicated the use of drones across various regions of the country. Increased detentions and searches at airports have particularly impacted human rights defenders, journalists, and other vulnerable groups. This has been compounded by the annulment of passports and other forms of intimidation, creating an environment where many feel trapped and fearful of speaking out.

The combined effect of these tactics is the pervasive sense that it is safer not to stand out. Many NGOs have begun reducing the visibility of their members on social media, some individuals have refused interviews, have published documented human rights violations under generic names, and journalists have turned to AI-generated avatars to protect their identities. People are increasingly setting their social media profiles to private and changing their profile photos to hide their faces. Additionally, many are now sending information about what is happening in the country to their networks abroad for fear of retaliation. 

These actions often lead to arbitrary detentions, with security forces publicly parading those arrested as trophies, using social media materials and tips from informants to justify their actions. The clear intent behind these tactics is to intimidate, and they have been effective in silencing many. This digital repression is often accompanied by offline tactics, such as marking the residences of opposition figures, further entrenching the climate of fear.

However, this digital aspect of repression is far from a sudden development. These recent events are the culmination of years of systematic efforts to control, surveil, and isolate the Venezuelan population—a strategy that draws from both domestic decisions and the playbook of other authoritarian regimes. 

In response, civil society in Venezuela continues to resist; and in August, EFF joined more than 150 organizations and individuals in an open letter highlighting the technology-enabled political violence in Venezuela. Read more about this wider history of Venezuela’s surveillance and civil society resistance in part two of this series, available here.