What Do Online Trackers Do & Are They Dangerous? Tech Experts Share Removal Tips

From shopping apps to fitness trackers, invisible data collectors follow users across the web. Here's what online trackers really do, why they matter, and how tech experts recommend protecting your privacy.

(firmenpresse) - How Online Trackers Follow You Around the WebIf you've ever searched for a new pair of shoes and then noticed the same product haunting you across every website, you've met an online tracker. These invisible tools monitor what you click, read, buy, and even how long you linger on a page — often without your explicit consent.
According to research from CitizenLab and Open Effect, many health and fitness apps share sensitive information with third-party advertisers, even when users don't agree to it. In some cases, the data includes biological readings and location history collected through wearable devices. Such information, when shared improperly, can compromise not just privacy but security — as seen in the 2015 DeepMind-NHS case, where medical data was shared without sufficient safeguards.
Experts at TUSK, a secure and private browser, warn that while trackers can improve convenience, such as remembering logins or preferences, their data-mining depth poses growing risks. As more users move their daily routines online, from banking to workouts, the potential for misuse expands. With over 2.77 billion people expected to shop online in 2025, exposure to embedded trackers is set to rise dramatically — especially across e-commerce and mobile platforms that rely heavily on targeted advertising.
Why Online Trackers MatterOnline trackers collect more than browser cookies. Many now capture device fingerprints, location data, and behavioral signals that can map your identity across different apps and devices. Over time, these fragments form detailed digital profiles — valuable for marketers, but worrisome for anyone concerned about personal data being stored or sold.
Wearable devices add another layer of complexity. "Fitness trackers and smartwatches collect biological data that can reveal far more than people realize," notes one privacy researcher. "Even heart rate and sleep patterns can indicate stress levels or medical conditions — yet many apps don’t meet medical data protection standards."

Expert-Backed Tips to Limit Online TrackingUse a trusted VPN to encrypt internet traffic and conceal your IP address from advertisers and data brokers.Stick to HTTPS websites. The padlock icon ensures encrypted data transfer and helps prevent eavesdropping on public Wi-Fi.Adjust browser privacy settings and enable "Do Not Track" options, even though not all websites honor them.Regularly clear cookies and cache to remove persistent identifiers that track your activity.Disable third-party cookies and fingerprinting features in your browser settings.Consider privacy-focused browsers or extensions that automatically block hidden trackers and reveal which websites are monitoring your behavior.One such example is the "Search and Privacy Essentials" extension by TUSK. Designed to force HTTPS connections (where possible) and visualize active trackers on any site, it helps users understand exactly what's happening behind the scenes. The extension works across Windows, macOS, Android, and iOS devices without requiring user accounts.
The Bottom LineProtecting privacy online isn't about paranoia — it's about awareness. Most trackers operate quietly, but their cumulative effect can shape what you see, buy, and believe. By combining smarter habits with privacy tools, you can reduce exposure and regain control of your data.
If you're ready to browse more consciously, consider exploring privacy-focused browsers like TUSK that make transparency the default — not an afterthought.

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Datum: 20.10.2025 - 21:01 Uhr
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Typ of Press Release: Unternehmensinformation
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Date of sending: 20/10/2025

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