Browser Privacy Comparison 2026

Browser Privacy Comparison 2026: Which Browser Actually Protects You?

If you’ve searched for a browser privacy comparison 2026, you already know that privacy on the web isn’t what browser marketing teams promise. Every major browser claims to protect your data, but the gap between marketing language and technical reality has never been wider. In 2026, the surveillance economy is more sophisticated than ever — third-party tracking scripts, advanced fingerprinting techniques, cross-site cookie syncing, and telemetry pipelines silently funnel your data to advertisers, data brokers, and even governments.

This guide delivers the honest, technical breakdown you need. We’ll compare eight browsers — Chrome, Firefox, Brave, Safari, Edge, Tor Browser, Vivaldi, and Send.win — across every privacy dimension that matters. No fluff, no paid endorsements, just data-driven analysis to help you choose the browser that matches your actual threat model.

Why Browser Privacy Matters More Than Ever in 2026

The privacy landscape has shifted dramatically in the past two years. Google finally deprecated third-party cookies in Chrome (with caveats), but the tracking industry has adapted. Fingerprinting has replaced cookies as the primary tracking vector for most ad-tech companies. Server-side tracking, CNAME cloaking, and first-party data strategies mean that even “cookie-free” browsing is far from private.

Meanwhile, governments worldwide have expanded digital surveillance programs. The EU’s eIDAS 2.0 regulations, expanded FISA Section 702 authority in the US, and various national internet security laws have created new pressure on browser vendors to comply with data access requests. Your browser choice isn’t just about ad tracking anymore — it’s about your fundamental digital autonomy.

Understanding what each browser actually does (versus what it claims) requires looking at concrete technical capabilities. Let’s break them down systematically. For a deeper look at how browser fingerprinting works in the first place, read our guide on browser fingerprint explained.

The Eight Browsers Under Review

Before diving into the comparison, let’s establish what each browser brings to the table architecturally:

Google Chrome

The world’s dominant browser with roughly 65% market share in 2026. Built on Chromium, Chrome offers baseline security features but remains fundamentally an advertising company’s product. Google’s Privacy Sandbox initiative has replaced third-party cookies with Topics API and Attribution Reporting, but these still serve Google’s ad business.

Mozilla Firefox

The independent, open-source alternative built on the Gecko engine. Firefox has historically led in privacy innovation with Enhanced Tracking Protection (ETP), Total Cookie Protection, and fingerprinting resistance. In 2026, Firefox continues pushing privacy defaults forward, though its market share has declined below 3%.

Brave Browser

The privacy-focused Chromium fork that strips Google services and integrates its own ad-blocking engine (Brave Shields). Brave has added advanced fingerprinting randomization and improved its Tor integration mode. It remains one of the most privacy-forward mainstream options.

Apple Safari

Apple’s WebKit-based browser, available primarily on macOS and iOS. Safari pioneered Intelligent Tracking Prevention (ITP) and has added features like Private Relay (iCloud+), link tracking protection, and advanced fingerprinting mitigations. Its closed ecosystem limits transparency.

Microsoft Edge

Microsoft’s Chromium-based browser that ships with Windows. Edge offers three levels of tracking prevention but shares significant telemetry with Microsoft. Its integration with Microsoft accounts and services creates privacy trade-offs similar to Chrome’s relationship with Google.

Tor Browser

The gold standard for anonymity, routing traffic through the Tor network’s onion routing protocol. Tor Browser is a hardened Firefox fork designed to make every user look identical. It sacrifices speed and convenience for maximum privacy against network-level surveillance.

Vivaldi

A Chromium-based browser focused on customization and power users. Vivaldi offers a built-in tracker and ad blocker, email client, and extensive privacy settings. It strips Google services but doesn’t push fingerprinting resistance as aggressively as Brave or Tor.

Send.win

A cloud-based browser isolation platform that runs browser sessions entirely in the cloud. Unlike traditional browsers, Send.win never executes web content on your local device. This architectural approach provides privacy through isolation — websites interact with a disposable cloud environment, never your actual hardware or network. For users wanting the best privacy browser 2026 offers, Send.win represents a fundamentally different paradigm.

Privacy Dimension #1: Tracking Protection

Tracking protection determines how well a browser blocks scripts, pixels, and network requests that profile your browsing behavior across websites.

Chrome relies on its Privacy Sandbox APIs (Topics, Attribution Reporting) rather than blocking trackers outright. Google’s approach preserves some tracking for its ad network while deprecating third-party cookies. The result is reduced cross-site tracking for third parties, but Google itself retains extensive visibility into your browsing through first-party integration.

Firefox uses Enhanced Tracking Protection (ETP) in Strict mode by default as of 2026, blocking known tracking scripts, cryptominers, and social media trackers. Its Total Cookie Protection partitions cookies per site, preventing cross-site cookie tracking entirely. Firefox also blocks tracking content in all windows, not just private browsing.

Brave ships with Brave Shields enabled by default, blocking third-party ads, trackers, and cross-site cookies. Its filter lists are updated more frequently than Firefox’s, and it blocks first-party bounce tracking — a technique where trackers redirect through first-party domains to evade cookie partitioning.

Safari uses ITP (Intelligent Tracking Prevention) to limit cross-site tracking via machine learning classification of domains. In 2026, Safari also blocks known tracking parameters in URLs and strips link decoration used for tracking. However, ITP has been criticized for inconsistent heuristics that sometimes block legitimate functionality.

Edge offers three tracking prevention levels: Basic, Balanced, and Strict. Even on Strict, Edge allows Microsoft-affiliated trackers through. Balanced mode, the default, still permits many ad-tech trackers that Chrome would block under Privacy Sandbox rules.

Tor Browser blocks all third-party cookies, isolates first-party storage per site, and strips most tracking parameters. Combined with onion routing, it provides the strongest anti-tracking posture of any traditional browser.

Vivaldi includes a built-in tracker blocker that draws from well-maintained filter lists. It’s effective against known trackers but doesn’t innovate beyond standard list-based blocking.

Send.win eliminates tracking at the architectural level. Because web content runs in a disposable cloud instance, trackers cannot access your local storage, cookies, or browsing history. Each session can start completely clean, making persistent tracking across sessions impossible.

Privacy Dimension #2: Fingerprint Resistance

Browser fingerprinting collects dozens of signals — screen resolution, installed fonts, WebGL rendering, audio context, canvas data, and more — to create a unique identifier that persists even without cookies.

Chrome has made minimal progress on fingerprinting resistance. The Privacy Sandbox includes a vague “reduce user-agent string” initiative, but Chrome still exposes extensive fingerprinting surface through APIs like Canvas, WebGL, AudioContext, and navigator properties.

Firefox offers a configurable “Fingerprinting Protection” feature (resistFingerprinting in about:config) that normalizes many signals. In 2026, this is enabled in private windows by default and available as an opt-in for regular browsing. It spoofs timezone, language, screen dimensions, and blocks canvas/WebGL readback.

Brave uses fingerprint randomization rather than normalization. Each session generates slightly different Canvas, WebGL, and AudioContext outputs, making it difficult to link sessions while maintaining website compatibility. This approach is generally considered more robust than Firefox’s normalization strategy.

Safari implemented a simplified system information approach that reports generic values for many fingerprinting vectors. Safari limits font enumeration and provides a simplified user agent. However, WebKit-specific rendering behaviors still create a detectable “Safari fingerprint.”

Edge offers no meaningful fingerprinting resistance beyond what Chromium provides. Microsoft has not invested in anti-fingerprinting technology.

Tor Browser is designed to make every user look identical. It normalizes window size, blocks WebGL and Canvas by default, spoofs timezone and language, limits font enumeration, and homogenizes hundreds of browser characteristics. This is the most aggressive anti-fingerprinting posture available.

Vivaldi does not include dedicated fingerprinting resistance features. Users are exposed to standard Chromium-level fingerprinting.

Send.win provides fingerprinting resistance through cloud isolation. Since websites interact with a cloud-hosted browser environment, the fingerprint they capture belongs to the cloud instance — not your local machine. Different sessions can present entirely different fingerprints, and your real hardware characteristics are never exposed.

Privacy Dimension #3: Cookie Handling

How a browser manages first-party cookies, third-party cookies, and storage partitioning directly affects cross-site tracking capability.

Chrome has deprecated third-party cookies but introduced Topics API and first-party sets that allow affiliated domains to share cookies. This reduces some cross-site tracking while preserving Google’s advertising capabilities.

Firefox implements Total Cookie Protection, which isolates cookies per top-level site. This means a tracker’s cookie set on site A is invisible when you visit site B, even if both sites load the same tracker. This is one of the strongest cookie isolation implementations available.

Brave blocks third-party cookies entirely and partitions first-party storage. It also clears site data for sites you haven’t visited in 30 days, preventing long-term cookie tracking from dormant trackers.

Safari caps first-party cookie lifetimes to 7 days for cookies set via JavaScript and 24 hours for cookies with tracking parameters. ITP also downgrades first-party cookies set by known trackers.

Edge blocks third-party cookies in Strict mode but allows them in Balanced mode with exceptions. Its cookie handling is less aggressive than Firefox, Brave, or Safari.

Tor Browser isolates all cookies per site and clears everything when the browser closes. No persistent cookie storage is maintained between sessions.

Vivaldi allows users to configure cookie policies per site but doesn’t implement automatic partitioning or time-based cookie expiry by default.

Send.win uses disposable sessions that destroy all cookies when the session ends. No cookies persist between sessions unless explicitly configured, providing the cleanest possible cookie handling for privacy-conscious users.

Privacy Dimension #4: Telemetry and Data Collection

Telemetry refers to data the browser itself sends back to its maker. Even a browser that blocks third-party tracking may still collect extensive data about your usage for its own purposes.

Chrome collects the most telemetry of any major browser. Usage statistics, crash reports, URL suggestions, Safe Browsing checks (which send partial URL hashes to Google), spell-check data, and sync data all flow to Google’s servers. While most can be disabled individually, the defaults are privacy-hostile.

Firefox collects telemetry by default but provides transparent controls to disable it. Mozilla’s telemetry policies are well-documented and have been independently audited. The data collected is primarily technical (crash reports, feature usage) rather than behavioral.

Brave collects minimal telemetry. Usage pings are anonymized through a privacy-preserving protocol (STAR/Constellation), and no browsing data is sent to Brave’s servers. Brave has the lowest telemetry footprint of any Chromium-based browser.

Safari collects crash reports and feature usage data tied to Apple ID unless disabled. Apple’s privacy posture is strong relative to Google and Microsoft, but the closed-source nature of Safari makes independent verification difficult.

Edge collects extensive telemetry similar to Chrome, including browsing data, diagnostic data, and usage patterns. Much of this is tied to Microsoft accounts. Edge also includes features like “Follow” and “Collections” that sync data to Microsoft’s cloud by default.

Tor Browser collects no telemetry whatsoever. There is no phone-home functionality.

Vivaldi collects a daily ping that includes a unique user ID and general usage data, but no browsing history or personal information. This is more than Brave or Tor but significantly less than Chrome or Edge.

Send.win processes browsing in isolated cloud environments. Your browsing activity stays within the cloud session and is not analyzed, profiled, or sold. The platform is designed for privacy by architecture, not just policy.

Privacy Dimension #5: WebRTC Leak Prevention

WebRTC (Web Real-Time Communication) can expose your real IP address even when using a VPN or proxy, because it uses STUN/TURN servers to establish peer-to-peer connections. This is a critical privacy vector that many browsers handle poorly. For a detailed breakdown, see our guide on WebRTC leak prevention.

Chrome does not disable WebRTC by default and exposes local IP addresses through STUN requests. Users must install extensions to prevent WebRTC leaks.

Firefox allows users to disable WebRTC via about:config (media.peerconnection.enabled = false), but this breaks video conferencing. Firefox doesn’t offer selective WebRTC control by default.

Brave provides a built-in WebRTC control that blocks non-proxied UDP connections by default. This prevents IP leaks while still allowing WebRTC functionality through proxied connections.

Safari limits WebRTC to prevent IP leaks through its relay infrastructure (when Private Relay is enabled). Without Private Relay, WebRTC can still expose local IPs.

Edge offers no built-in WebRTC leak prevention. Users need extensions, same as Chrome.

Tor Browser disables WebRTC entirely, preventing any possibility of IP leaks through this vector.

Vivaldi includes a WebRTC broadcast IP control in its privacy settings, though it’s not configured for maximum privacy by default.

Send.win provides complete WebRTC leak protection inherently. Because the browser runs in the cloud, any WebRTC connections reveal the cloud server’s IP address, not yours. Your real IP is never exposed regardless of WebRTC settings.

Privacy Dimension #6: Extension Ecosystem and Privacy Tools

A browser’s extension ecosystem determines how much you can enhance its privacy capabilities beyond the defaults.

Chrome has the largest extension library but is actively restricting privacy extensions through its Manifest V3 migration, which limits ad blocker capabilities by removing the webRequest blocking API.

Firefox fully supports Manifest V2 extensions alongside V3, preserving powerful ad-blocking capabilities (uBlock Origin works at full power). Firefox’s extension ecosystem is smaller but privacy-friendlier.

Brave supports Chromium extensions but has reduced need for them since Brave Shields handles most privacy functions natively. Brave also maintains compatibility with MV2 extensions where possible.

Safari has a limited extension ecosystem restricted to the App Store. Privacy extensions exist but are fewer and less powerful than Firefox or Chromium alternatives.

Edge supports Chromium extensions and has its own add-on store. Like Chrome, it is transitioning to Manifest V3 with the same limitations for ad blockers.

Tor Browser deliberately discourages extensions to prevent fingerprinting. Adding extensions makes your browser more unique, undermining Tor’s uniformity-based privacy model.

Vivaldi supports Chromium extensions with the same MV3 limitations as Chrome and Edge.

Send.win doesn’t rely on extensions for privacy — its cloud architecture provides protection at a deeper level than any extension can. This removes the complexity and maintenance burden of managing privacy extension stacks.

Comprehensive Browser Privacy Comparison Table

Here’s how all eight browsers stack up across key privacy dimensions in 2026:

Privacy Feature	Chrome	Firefox	Brave	Safari	Edge	Tor	Vivaldi	Send.win
Tracking Protection	⚠️ Partial (Privacy Sandbox)	✅ Strong (ETP Strict)	✅ Strong (Shields)	✅ Good (ITP)	⚠️ Partial	✅ Strongest	✅ Good	✅ Architectural
Fingerprint Resistance	❌ Minimal	✅ Normalization	✅ Randomization	⚠️ Partial	❌ None	✅ Strongest	❌ None	✅ Cloud Isolation
Third-Party Cookies	⚠️ Deprecated (with exceptions)	✅ Partitioned	✅ Blocked	✅ Blocked	⚠️ Mode-dependent	✅ Blocked + Isolated	⚠️ Configurable	✅ Session-destroyed
Telemetry Level	❌ Extensive	⚠️ Moderate (opt-out)	✅ Minimal	⚠️ Moderate	❌ Extensive	✅ None	⚠️ Light	✅ None
WebRTC Leak Prevention	❌ No	⚠️ Manual config	✅ Built-in	⚠️ Private Relay only	❌ No	✅ Disabled entirely	⚠️ Settings toggle	✅ Architectural
Extension Privacy Support	⚠️ MV3 limited	✅ MV2 full support	✅ Native + extensions	❌ Limited	⚠️ MV3 limited	❌ Discouraged	⚠️ MV3 limited	✅ Not needed
Open Source	⚠️ Partial (Chromium)	✅ Fully open	✅ Fully open	❌ Closed	⚠️ Partial (Chromium)	✅ Fully open	❌ Closed	⚠️ Platform-based
Update Frequency	✅ Every 2 weeks	✅ Every 4 weeks	✅ Every 3 weeks	⚠️ With OS updates	✅ Every 2 weeks	✅ Follows Firefox ESR	✅ Regular	✅ Continuous (cloud)
Overall Privacy Rating	⭐⭐	⭐⭐⭐⭐	⭐⭐⭐⭐	⭐⭐⭐	⭐⭐	⭐⭐⭐⭐⭐	⭐⭐⭐	⭐⭐⭐⭐⭐

Additional Privacy Factors: Open Source Status and Auditability

Open-source code allows independent security researchers to verify privacy claims. This matters because closed-source browsers can include hidden telemetry or backdoors that users cannot detect.

Fully open source: Firefox, Brave, and Tor Browser publish their complete source code. Any researcher can audit their tracking protection, telemetry, and data handling. This transparency has led to numerous community-discovered and fixed privacy issues.

Partially open source: Chrome and Edge are built on the open-source Chromium project, but both add proprietary Google/Microsoft code on top. You can audit the Chromium base but not the vendor additions — which is precisely where most telemetry and data collection happens.

Closed source: Safari and Vivaldi are closed-source. Apple and Vivaldi make privacy promises that cannot be independently verified through code review. Safari’s WebKit engine is open source, but the browser application layer is not.

Send.win operates as a platform service. While the client-side components are verifiable, the privacy guarantee comes from the architectural model — cloud isolation means your local environment is never exposed, regardless of what the browser code does internally.

Update Frequency and Security Patch Cadence

Browsers with faster update cycles patch security vulnerabilities more quickly, reducing the window during which zero-day exploits can target your browsing.

Chrome and Edge lead with biweekly stable releases and emergency patches for critical vulnerabilities. Brave follows closely with updates every three weeks. Firefox maintains a four-week cycle with rapid response to critical CVEs. Safari’s updates are tied to macOS/iOS releases, which can delay critical patches by weeks. Tor Browser follows Firefox ESR (Extended Support Release), meaning it gets patches less frequently but benefits from more stable, tested code.

Send.win has a unique advantage here: because browser instances run in the cloud, patches are applied server-side without requiring user action. There is zero delay between a security patch being available and it being deployed to your browsing environment.

Choosing the Right Browser for Your Threat Model

The “best” privacy browser depends entirely on what threats you’re defending against. Here’s a practical framework:

Casual Privacy (Blocking Ads and Basic Tracking)

If you want better-than-Chrome privacy without sacrificing website compatibility, Brave or Firefox are excellent choices. Both block most trackers out of the box and require minimal configuration. Brave’s fingerprint randomization gives it a slight edge for anti-fingerprinting without breaking sites.

Professional Privacy (Protecting Business Data)

If you handle sensitive business information and want to prevent competitors or data brokers from profiling your research activity, Send.win provides the strongest isolation. Cloud-based browsing ensures that no local traces exist and that your real identity is completely decoupled from your browsing activity. For teams comparing this approach to VPNs, our cloud browser vs VPN analysis explains the architectural differences.

Maximum Anonymity (Evading State-Level Surveillance)

For journalists, activists, and whistleblowers who need anonymity against well-resourced adversaries, Tor Browser remains the gold standard. Its onion routing provides network-level anonymity that no other browser matches. However, Tor is slow, breaks many websites, and draws attention by virtue of using the Tor network.

Apple Ecosystem Users

If you’re locked into Apple’s ecosystem, Safari with iCloud Private Relay provides reasonable privacy within Apple’s walled garden. However, you’re trusting Apple’s closed-source implementation and their business decisions about what constitutes acceptable tracking.

The Cloud Isolation Advantage

Traditional browsers — even privacy-focused ones — all share a fundamental limitation: they run on your local device. This means that any browser exploit, fingerprinting technique, or tracking mechanism that can penetrate the browser’s defenses has direct access to your operating system, hardware characteristics, network identity, and local files.

Cloud-based browser isolation, as implemented by Send.win, breaks this assumption entirely. The browser runs in a remote cloud environment. What you see on your screen is a rendered stream of the browser session, not the actual web content. This means:

• Zero local exposure: Malware, trackers, and exploits cannot reach your device
• No persistent fingerprint: Your real hardware, fonts, screen size, and GPU are never visible to websites
• Disposable sessions: Each session starts clean with no cookies, history, or cached data from previous sessions
• Network isolation: Websites see the cloud server’s IP, not your real IP address — without the speed penalty of Tor
• Instant patching: Security updates are deployed server-side with no user action required

How Send.win Helps You Master Browser Privacy Comparison 2026

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• Browser Isolation – Every tab runs in a sandboxed environment
• Cloud Sync – Access your sessions from any device
• Multi-Account Management – Manage unlimited accounts safely
• No Installation Required – Works instantly in your browser
• Affordable Pricing – Enterprise features without enterprise costs

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This architectural approach addresses privacy threats that even Tor Browser cannot fully mitigate, such as browser exploits that escape the sandbox to access system-level information.

Common Privacy Misconceptions in 2026

“Incognito Mode Makes Me Private”

Private browsing modes (Incognito in Chrome, Private Window in Firefox) only prevent local history storage. They do not block tracking, prevent fingerprinting, or hide your IP address. Your ISP, employer, and the websites you visit can still see everything you do.

“A VPN Makes My Browser Private”

VPNs encrypt your network traffic and mask your IP from websites, but they do not prevent browser fingerprinting, cookie tracking, or telemetry collection. A VPN combined with Chrome still gives Google extensive visibility into your behavior. VPNs also introduce a trust problem — you’re shifting trust from your ISP to the VPN provider.

“I Have Nothing to Hide”

Privacy isn’t about having secrets. It’s about controlling who has access to your information and how it’s used. Browser privacy protects against price discrimination, insurance profiling, employer surveillance, identity theft, and manipulation through targeted content.

“All Privacy Browsers Are the Same”

As this comparison shows, there are massive differences between browsers that claim to be “privacy-focused.” The technical implementations, default configurations, and architectural approaches vary enormously. A browser that blocks cookies but doesn’t resist fingerprinting provides incomplete protection.

Frequently Asked Questions

Which browser has the best privacy in 2026?

For maximum anonymity against state-level surveillance, Tor Browser remains the strongest option. For everyday private browsing with good usability, Brave and Firefox lead the pack. For comprehensive privacy through architectural isolation — where your real identity, hardware, and IP are never exposed — Send.win offers the most complete protection without the speed and compatibility trade-offs of Tor.

Is Chrome really that bad for privacy?

Yes. Despite deprecating third-party cookies, Chrome still collects extensive telemetry, offers no fingerprinting resistance, and lacks WebRTC leak prevention. Google’s Privacy Sandbox replaces some third-party tracking with Google-controlled tracking alternatives. Chrome is designed to serve Google’s advertising business, and its privacy features reflect that priority.

Does Firefox or Brave offer better privacy protection?

Both are excellent, but they take different approaches. Firefox uses fingerprint normalization (making all users look similar), while Brave uses fingerprint randomization (making each session look different). Brave blocks more trackers by default and handles WebRTC leaks natively. Firefox offers superior extension support with full MV2 compatibility. For most users, Brave’s out-of-the-box privacy is slightly stronger, but Firefox’s configurability allows more advanced users to achieve comparable or better results.

Can I use a VPN instead of a privacy browser?

A VPN and a privacy browser address different threats. A VPN hides your IP address and encrypts network traffic but doesn’t prevent browser fingerprinting, cookie tracking, or telemetry. A privacy browser blocks tracking and fingerprinting but doesn’t hide your IP. Ideally, you should use both. Cloud browsers like Send.win combine both benefits — hiding your IP and preventing fingerprinting in a single solution.

What is browser fingerprinting and can any browser fully prevent it?

Browser fingerprinting collects dozens of signals from your browser — screen resolution, installed fonts, GPU characteristics, audio processing quirks, timezone, language, and more — to create a unique identifier. No traditional browser can fully prevent it because some signals are inherent to how browsers render web content. Tor Browser comes closest by making all users identical, but this breaks many websites. Cloud browsers like Send.win prevent fingerprinting by exposing a cloud instance’s characteristics instead of your real device.

Is Safari private enough for most users?

Safari provides decent baseline privacy with ITP and link tracking protection, especially when combined with iCloud Private Relay. However, Safari is closed-source, which means its privacy claims cannot be independently verified. It also has limited extension support and is only available on Apple devices. For Apple ecosystem users who want convenience-first privacy, Safari is adequate. For serious privacy needs, Firefox, Brave, or Send.win are stronger choices.

How does cloud browser isolation compare to using Tor?

Tor Browser routes traffic through multiple relays to provide network anonymity, while cloud browser isolation runs the entire browser in a remote environment. Tor is slower (typically 2-5x slower than regular browsing), breaks many websites, and can draw attention from network monitors. Cloud isolation like Send.win provides comparable privacy benefits — hidden IP, no local fingerprint, disposable sessions — with normal browsing speeds and full website compatibility. Tor is still superior for anonymity against very sophisticated adversaries who might compromise a cloud provider.

Should I use multiple browsers for different activities?

Browser compartmentalization is an effective privacy strategy. Using one browser for personal browsing (e.g., Brave), another for work (e.g., Firefox with strict settings), and a cloud browser like Send.win for sensitive research or financial activities creates strong privacy boundaries. This prevents cross-contamination of tracking data between different areas of your digital life.

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