Learn About Digital History and Privacy Settings

Understanding Your Digital Footprint and Online Records

A digital footprint is the trail of information you leave behind when you use the internet. Every time you visit a website, post on social media, make an online purchase, or send an email, data about these activities gets recorded somewhere. According to a 2023 study by the Pew Research Center, approximately 84% of American adults have some form of digital footprint, whether they realize it or not. This footprint can include your browsing history, location data, purchase records, social media activity, and information shared with websites and apps.

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Your digital history includes several types of information. Website cookies track your online behavior to show you targeted advertisements. When you fill out online forms, that information gets stored on company servers. Social media platforms maintain detailed records of your posts, photos, comments, and even content you viewed but did not share. Email providers store copies of messages you send and receive. Mobile apps collect data about your location, contacts, and device usage patterns. Payment processors maintain records of your transactions. Search engines keep logs of your search queries. Even websites that you visit without creating an account can track your movements through pixels and tracking codes.

Understanding where your information lives is the first step toward managing your digital presence. Many people are surprised to learn that data they thought was deleted may still exist on company servers or in backup files. For example, when you delete a post from social media, the platform often retains the data even though it is no longer visible to other users. Similarly, clearing your browser history removes local records but does not necessarily stop websites from knowing you visited them.

The amount of data being collected is substantial. A 2022 report from the World Economic Forum indicated that the global datasphere—all the data created, captured, copied, and consumed—reached 97 zettabytes. The average internet user generates approximately 2.5 quintillion bytes of data daily through regular online activities. This information has value to companies, advertisers, and other organizations that may purchase or trade access to your data.

Practical Takeaway: Begin documenting what digital accounts you actively use. Create a simple spreadsheet listing email accounts, social media profiles, online banking, shopping accounts, and subscription services. Next to each entry, note the email address used to create the account. This inventory will help you understand the scope of your digital footprint and make it easier to manage privacy settings across all platforms.

How Websites and Apps Collect Your Information

Websites and applications collect information through several methods, many of which happen without obvious notification. Understanding these collection methods helps you make informed decisions about which services to use and how to configure your privacy settings. The collection process begins the moment you visit a website or open an app, even before you create an account or enter any information intentionally.

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Cookies are small files that websites place on your device to remember information about you. First-party cookies come directly from the website you are visiting and serve legitimate purposes like keeping you logged in or remembering your shopping cart. Third-party cookies come from other companies, typically advertisers, and track your movement across different websites. A 2023 report from the Interactive Advertising Bureau found that the average person encounters tracking from approximately 200 different companies while browsing major websites. Some cookies expire after your browsing session ends, while persistent cookies remain on your device for months or even years.

Pixels are tiny, invisible images embedded in websites and emails that track whether you visited a page or opened an email. When you view a webpage or open an email containing a pixel, your device automatically downloads this image, and the server hosting the pixel records that your device accessed it. This happens whether or not you interact with the page. Advertisers use pixels to determine whether their ads are effective and to build profiles of your interests.

Location tracking occurs through several methods. If you have location services enabled on your smartphone, apps can request access to your precise location. Websites can estimate your general location based on your internet service provider address. Mobile apps often request permission to access your contacts, calendar, photos, and other personal information. According to a 2022 study by privacy researchers at Carnegie Mellon University, 72% of popular free apps on Android request access to sensitive device features that are not necessary for their core function.

Form data and account information represent intentional data collection. When you create an account, complete a purchase, or fill out a survey, that information gets stored by the company operating the service. Companies may also combine the data you provide directly with information collected through other means. For example, a retailer might match your purchase history with data from a data broker to build a more complete profile of your shopping preferences.

Practical Takeaway: Review the privacy policies of your three most-used websites or apps. You do not need to read the entire policy—most are between 1,500 and 2,500 words. Instead, use the "Find" function (Ctrl+F on Windows, Command+F on Mac) to search for specific terms: "collect," "track," "share," and "third party." This targeted approach takes about 5 minutes per policy and reveals the primary data collection methods.

Navigating Privacy Settings on Major Platforms

Most major websites and apps include privacy controls, though finding and understanding these settings requires some effort. Each platform structures its privacy settings differently, but they generally fall into categories: who can see your information, what data is collected, and how that data is used. Taking time to review these settings gives you more control over your digital presence and reduces the amount of information shared with advertisers and other companies.

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Social media platforms like Facebook, Instagram, Twitter, TikTok, and LinkedIn offer privacy settings in account settings menus, typically accessed through profile or menu icons. On Facebook, you can control who sees your posts by using the audience selector tool before posting. You can also review a list of apps and websites connected to your Facebook account and remove access for any you no longer use. The Privacy Checkup tool walks you through basic privacy choices. Instagram offers similar controls, including options to make your account private so only approved followers can see your posts. On TikTok, you can adjust who can comment on videos, send you direct messages, and see your account.

Google accounts control privacy across Gmail, Google Search, YouTube, Google Drive, and other Google services. The My Activity page shows what Google has recorded about your online behavior across its services. From this page, you can delete specific searches or entire days of activity. However, deleting activity from My Activity does not mean Google stops collecting data going forward. You can control what data Google collects through the Data & Privacy settings. Google allows you to turn off Web & App Activity tracking, which limits data collection across devices and services. YouTube offers separate privacy controls for your watch history and search history.

Email providers like Gmail, Outlook, and Yahoo have privacy settings accessible through account settings. These controls include options about whether to allow tracking pixels in emails and whether to keep backup copies of deleted messages. Microsoft Outlook allows you to view and delete data Microsoft has collected about you. Yahoo provides privacy controls through its Account Info section.

Shopping and financial platforms including Amazon, eBay, PayPal, and banking apps typically include privacy settings in account preferences. Amazon allows you to view and delete your browsing history, manage permissions for connected devices (like Echo speakers), and control advertising preferences. PayPal lets you manage which apps have access to your account and what information those apps can see.

Practical Takeaway: Choose one platform you use regularly and spend 15 minutes exploring its privacy settings. Look specifically for options related to: (1) who can see your posts or profile, (2) what data is collected, and (3) whether you can opt out of targeted advertising. Take note of one change you could make to increase your privacy. Then make that one change. Starting with a single platform is less overwhelming than trying to adjust settings everywhere at once.

Managing Advertisements, Tracking, and Data Sharing

Targeted advertising relies on data collection and tracking. Companies build profiles of your interests, location, age, income level, and other characteristics to show you ads they believe you will respond to. While targeted ads can be convenient—you see products relevant to your interests—this system requires extensive tracking. Understanding how advertising tracking works gives you options for reducing it.

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Behavioral advertising tracks your online activity to determine your interests. If you visit automotive websites and search for car insurance, advertisers will recognize your interest and show you car-related ads across other websites. Contextual advertising shows ads based on the content you are currently viewing, rather than your past behavior. For example, reading an article about gardening might result in gardening ads appearing on that same page. Retargeting displays ads for products you viewed but