We all know that websites store cookies and track our browsing habits to show targeted ads. But have you stopped to think about how much of that data could be visible to others?

Imagine sharing a computer with your partner while shopping for an anniversary gift. Suddenly, the ads you see online could give away the surprise. Or consider using your laptop at work during a meeting – social media feeds, YouTube, and news sites could reveal personal information you’d rather keep private.

Your Devices Are Watching

It’s not just computers. Smart TVs and streaming devices are increasingly tracking your viewing habits and sometimes personal data. The next generation of connected devices may soon show you ads based on your online activity even while you’re watching television.

Some platforms make this even more personal. For example, if you’re logged into streaming services, they may greet you by name. It sounds convenient, but unexpected personalised messages can feel intrusive and highlight just how much of your activity is being monitored.

Mobile Apps Know More Than You Think

Mobile applications collect detailed information about you, often far beyond what you’d expect. Did you know some ride-hailing apps can detect your battery level? They may adjust pricing or suggest alternatives based on the assumption that a low battery increases the likelihood you’ll accept a ride at a higher cost.

Similarly, navigation apps, fitness trackers, and other smart services often log your location, travel patterns, and device usage, creating a detailed profile of your daily life.

Privacy: Benefit or Risk?

There are clear benefits to this data collection. Emergency services, for example, can locate missing or abducted persons using mobile signals. Healthcare apps can monitor your activity to detect early signs of illness. Retailers can offer deals that genuinely match your interests.

But there’s a darker side. Data tracking can feel intrusive, particularly when it influences pricing, advertising, or the perception of your private habits. It raises questions about consent, transparency, and whether our digital footprint is being exploited without our awareness.

What You Can Do

Even if total privacy is impossible online, there are steps you can take to protect yourself:

1. Use private browsing modes – Incognito or private modes limit cookies and tracking.
2. Log out of accounts – Don’t stay logged into social media or email when browsing sensitive sites.
3. Adjust app permissions – Review which apps have access to your location, contacts, and other personal information.
4. Enable do-not-track settings – Most browsers and apps offer some form of tracking control.
5. Consider VPNs – A virtual private network encrypts your connection, making it harder for companies to monitor activity.

At the end of the day, staying informed and proactive about your digital footprint is the best way to maintain privacy in 2026.