What incognito mode does

Whether you call it Incognito (Chrome), Private Browsing (Firefox), InPrivate (Edge) or Private Browsing (Safari), the basic principle is the same in every browser:

• No browsing history: Pages you visit won't appear in your history once you close the window.
• No cookies after the session: Cookies set during the session are deleted when you close the incognito window.
• No form data: Search terms, usernames or addresses you type in are not saved.
• Separate session: You can sign into a service with a different account without logging out of your regular one.

In short: incognito mode makes sure your own computer retains no traces after the session. That's useful when you share a PC with other people or when you don't want certain searches showing up in your history.

More bark than bite?

When you open an incognito window in Chrome, you're greeted with secret-agent imagery: a faceless figure in a hat and glasses that screams "stealth." And sure enough – you arrive at websites as a seemingly unknown visitor. No stored cookies, no auto-filled forms, no personalized prices.

But that's about where it ends. Beyond that, surprisingly little is actually hidden. What the mode really does is remarkably modest – and nowhere near what that spy-movie aesthetic suggests.

A study from the University of Chicago and Leibniz University Hannover confirms the problem: a startling number of users believe incognito mode is far more powerful than it really is. Many thought it protected them from tracking by websites, from their internet provider or even from government surveillance.

None of that is true.

Incognito mode is basically a local eraser. It wipes traces on your device – but everything that leaves your computer is completely unaffected. Imagine a secret agent who gets recognized and identified on every mission but dutifully shreds his own diary when he gets home. Not very incognito.

What incognito mode does not protect you from

1. Your internet provider still sees everything

Your ISP (Comcast, AT&T, Verizon, T-Mobile – whoever provides your connection) routes all of your traffic. Whether you're browsing in incognito mode or not makes no difference. Your provider can log which websites you visit, when you visit them and how much data is transferred. Your IP address is fully visible as well.

2. Websites and services still recognize you

The moment you sign in to Google, Facebook, Amazon or any other service, that provider knows exactly who you are – incognito or not. Every search, every click is tied to your account. Incognito mode only prevents the browser from storing that data locally; it cannot stop the service from recording it on its servers.

Targeted advertising still works, too – just not quite as precisely. Advertisers can't tap into an existing user profile, but your browsing behavior since you opened the incognito window is fair game.

3. Your employer and network administrators can see your traffic

If you're browsing on a corporate network, the IT department can monitor your traffic – and at many companies, they do. Firewalls and proxy servers log which sites are accessed. Incognito mode offers zero protection here.

4. Fingerprinting works just the same

Modern tracking goes far beyond cookies. With so-called browser fingerprinting, websites build a profile of your computer based on characteristics like screen resolution, installed fonts, browser version, time zone and dozens of other parameters. That combination is often as unique as an actual fingerprint. Since incognito mode doesn't change any of these properties, websites can still recognize you.

5. Downloaded files and bookmarks stay

Here's a detail many people miss: files you download in incognito mode are saved to your hard drive just like any other download. Likewise, any bookmarks you create survive after the window is closed. Neither one is tied to the incognito session.

When incognito mode is actually useful

Despite its limitations, private browsing has its place. Here are some scenarios where it genuinely comes in handy:

• Shopping for gifts without housemates or family members discovering them in the browser history
• Comparing prices without cookies inflating the price on repeat visits (some travel and flight-booking sites do this). Want to see what Amazon looks like when it doesn't know who you are? This is how.
• Using multiple accounts at the same time – say, a personal and a work email
• Troubleshooting websites: Incognito starts you with a clean slate – no cache, no cookies – which is helpful when diagnosing issues
• Using public or borrowed computers, such as at hotels or libraries, so the next user doesn't see your data

For all of these, incognito mode is a handy tool. That said, if you've already configured your browser to delete all cookies, user data and history on close, the difference from "secret" mode is barely noticeable. For real online privacy, you need other measures.

What actually improves your privacy

If you're serious about improving your online privacy, incognito mode alone won't cut it. The following steps offer significantly more protection:

Use a VPN

A VPN (Virtual Private Network) encrypts all of your internet traffic and routes it through an external server. Your ISP then sees only that you're using a VPN connection, not which sites you visit. Look for a trustworthy provider that keeps no usage logs.

Use a tracking blocker

Browser extensions like uBlock Origin block tracking scripts, ads and fingerprinting attempts. This is one of the most effective measures against cross-site tracking – and it works outside of incognito mode, too.

Switch your search engine

Google stores your searches and links them to your profile. Search engines like DuckDuckGo or Startpage, on the other hand, don't store any personal data and don't show personalized results.

Consider a privacy-focused browser

Browsers like Brave or the Tor Browser go much further than a regular browser's incognito mode. Brave blocks trackers and ads by default, while the Tor Browser routes your traffic through multiple encrypted nodes to provide a high degree of anonymity.

Use software that respects your data

Privacy doesn't end at the browser. You should also pay attention to where your data goes in the software you use every day. Big cloud-based Office suites send your documents through third-party servers and analyze your usage. Desktop applications that run locally on your computer and keep your files on your device are the better choice here.

SoftMaker Office is a good example: it runs on your computer, and your documents stay with you.

Adjust your browser settings

Even without incognito mode, you can configure your browser to delete cookies on close, block third-party cookies and send Do Not Track requests. Firefox also offers Enhanced Tracking Protection, which blocks many trackers by default.

The bottom line: a useful tool, not a shield

Incognito mode is not an invisibility cloak. It erases local traces on your device – nothing more and nothing less. That's convenient in plenty of everyday situations, but anyone looking for real privacy online needs to reach for other tools.

The good news: just a few targeted steps – a VPN, a tracking blocker and privacy-respecting software – can dramatically improve your online privacy. Incognito mode can then be an extra layer of hygiene in your toolkit – but only one layer.

How do you handle privacy online? Do you use a VPN, a specialized browser or have other tips? Let us know in the comments – we'd love to hear about your experience.