What private browsing actually does and doesn't protect
Private browsing — called Incognito Mode in Chrome, Private Window in Firefox, and InPrivate in Edge — stops your browser from saving your search history, cookies, and temporary files on your device. It does not hide your activity from your internet service provider, your employer's network, or the websites you visit. Those sites still see your real IP address and know you visited them. Private browsing is useful for keeping your local browsing history off a shared computer, but it is not a substitute for a VPN if you want to hide your activity from your ISP or network administrator.
The confusion matters because you arrived here from learning about data brokers. Private browsing will not stop websites from collecting your data while you browse. It only stops your own device from remembering you were there. If you search for something in a private window, Google still records that search to your Google account (if you are signed in), and the website you land on still collects information about your visit. Private browsing and data broker removal are two separate problems that need separate solutions.
Key Takeaways
- Private browsing stops your browser from saving history on your device, but websites and your ISP can still see what you do.
- A VPN hides your IP address from websites and your ISP, but it does not stop websites from tracking you or collecting data.
- Signing out of your accounts (Google, Facebook, email) before browsing prevents those companies from linking your activity to your profile.
- Blocking third-party cookies and using a tracker blocker stops many websites from following you across the web, but not all.
- Private browsing combined with a VPN and tracker blocking gives you more privacy than any one method alone, but no combination makes you completely anonymous.
How to use private browsing on your device
Open a new private window instead of a regular window. In Chrome, press Ctrl+Shift+N on Windows or Command+Shift+N on Mac. In Firefox, press Ctrl+Shift+P on Windows or Command+Shift+P on Mac. In Edge, press Ctrl+Shift+P on Windows or Command+Shift+P on Mac. Safari on iPhone and iPad has Private Browsing in the tabs menu at the bottom right. On Android, Chrome's Incognito mode is accessed the same way as desktop.
Everything you do in that window — searches, websites visited, form entries — stays in that window and is deleted when you close it. Your device will not remember it. However, if you are signed into an account (Gmail, Facebook, your work email), that company's servers are still recording your activity. Close the window, sign out of your accounts first, then open a new private window if you want to prevent that recording.
Private browsing does not make you anonymous to websites. If you log into your email account in a private window, the email company knows it is you. If you visit a news site in a private window, that site can still see your IP address and track your behavior on their pages. Private browsing only affects what your device stores locally.
Using a VPN to hide your IP address
A VPN (Virtual Private Network) routes your internet traffic through a server in another location, so websites see the VPN server's IP address instead of yours. This hides your real location and ISP from websites. It also prevents your ISP from seeing which websites you visit, though they can still see that you are using a VPN.
A VPN does not stop websites from tracking you or collecting data about your behavior. If you visit a shopping site through a VPN, that site still knows what you clicked, what you searched for, and what you put in your cart. It just does not know your real IP address or location. A VPN also does not protect you from malware, phishing, or other security threats — it only hides your IP.
Free VPNs often sell your data to advertisers or inject ads into your browsing, which defeats the purpose. Paid VPNs cost between $3 and $12 per month. Some people use a VPN only when on public WiFi (coffee shops, airports, hotels) where your traffic is easier to intercept. Others use one all the time. Neither approach is wrong — it depends on what you are trying to protect against.
Blocking cookies and trackers
Websites place small files called cookies on your device to remember you. First-party cookies are set by the website you are visiting and are usually harmless — they remember your login or your shopping cart. Third-party cookies are set by advertisers and data brokers embedded in the page, and they follow you across multiple websites to build a profile of your interests.
Most browsers now block third-party cookies by default. In Chrome, go to Settings > Privacy and Security > Cookies and other site data, and select "Block third-party cookies". In Firefox, go to Settings > Privacy & Security > Enhanced Tracking Protection and select "Strict". In Safari, go to Settings > Privacy > Prevent cross-site tracking and turn it on. These settings stop many trackers, but not all — some advertisers use other methods.
Tracker blockers like uBlock Origin (free, available for Chrome and Firefox) go further by blocking known tracking domains entirely. Install the extension, and it will block ads, trackers, and some malware domains before they load. This speeds up page loading and prevents many data collection attempts. However, some websites detect ad blockers and refuse to load until you disable them.
Signing out of your accounts before browsing
Google, Facebook, Amazon, and other large companies track your activity across the web even when you are not on their sites. They do this through login buttons, comment sections, pixels (invisible tracking images), and partnerships with other websites. If you are signed into your Google account while browsing, Google records every search and every website you visit that contains a Google tracking pixel.
Sign out of all accounts before you browse if you want to prevent this. Close all tabs, sign out of Gmail, Facebook, and any other accounts, then open a new private window. This prevents those companies from linking your activity to your profile. You will lose convenience — you will have to log back in to check email or use services — but your browsing will not be recorded to your account.
This is especially useful if you are researching something sensitive (health conditions, legal issues, financial problems) and do not want that information tied to your profile for advertising purposes. It is less necessary for routine browsing where you do not mind targeted ads.
Combining methods for stronger privacy
No single method gives you complete privacy. Private browsing + VPN + tracker blocker + signed out accounts is stronger than any one alone, but it still does not make you anonymous. Websites can still identify you through your behavior, your device fingerprint (the unique combination of your browser, screen size, fonts, and plugins), or by asking you to log in.
If you are trying to prevent data brokers from collecting information about you, the most effective approach is to remove your information from data broker sites (which you are already learning about) and then limit what new information they can collect. Use private browsing on shared devices, block third-party cookies, and use a tracker blocker for routine browsing. Use a VPN if you are on public WiFi or if you want to hide your activity from your ISP. Sign out of accounts when researching sensitive topics.
The combination that works for you depends on what you are protecting against. If you are worried about your ISP selling your browsing data, a VPN helps. If you are worried about advertisers following you across websites, a tracker blocker helps. If you are worried about your device storing your history, private browsing helps. Most people benefit from blocking third-party cookies and using a tracker blocker, because these stop the most common form of tracking without much inconvenience.
What private browsing cannot do
Private browsing does not protect you from viruses, malware, or phishing attacks. A malicious website can still infect your device in a private window. It does not protect you from websites that require you to log in — if you sign into your email in a private window, that email company knows it is you. It does not hide your activity from your employer if you are on a work network, or from your school if you are on a school network. Network administrators can see all traffic on their network regardless of private browsing.
Private browsing also does not stop websites from collecting data about you while you browse. It only stops your device from storing that data. If you fill out a form, click links, or watch videos in a private window, the website records all of that. The only difference is that your browser does not save cookies or history files when you close the window.
Frequently Asked Questions
Does private browsing hide me from my ISP?
No. Your ISP can see that you are using private browsing, and they can see which websites you visit. A VPN hides your activity from your ISP, but private browsing alone does not. If you want to hide your activity from your ISP, you need a VPN in addition to private browsing.
Can websites see me if I use private browsing?
Yes. Websites see your real IP address, your device type, your browser, and everything you do on their site. Private browsing only stops your device from remembering you were there. It does not hide you from the website itself.
Should I use a VPN all the time?
It depends on your priorities. A VPN slows your connection slightly and costs money. Most people use one only on public WiFi. If you are concerned about your ISP selling your browsing data or if you live in a country with heavy internet censorship, using a VPN all the time makes sense.
Do I need both a VPN and a tracker blocker?
They do different things. A VPN hides your IP address. A tracker blocker stops advertisers from following you across websites. You can use one, the other, or both depending on what you are trying to prevent. Most people benefit from a tracker blocker even without a VPN.
Will private browsing stop data brokers from collecting my information?
No. Data brokers collect information from public records, purchase history, and tracking pixels — not from your browser history. Private browsing does not stop any of that. Removing your information from data broker websites is the only way to stop them from selling your data.