How SilverArrow protects your privacy.

Abstract. Ordinary web browsing leaks far more than most people realize — not just through cookies, but through fingerprinting, tracking URLs, and cookies engineered to survive deletion. SilverArrow is a browser extension that intercepts these mechanisms at the point of request, using a fixed, rule-based blocklist rather than a data-collection model. This paper describes the threat model SilverArrow addresses, the specific mechanisms it uses, what data it does and doesn’t handle, and where its protection has real limits.

1. The problem: how everyday browsing gets tracked

Most people assume that clearing cookies resets their privacy. In practice, modern tracking is built to survive exactly that. A visit to an ordinary page can trigger several tracking mechanisms at once, each designed to keep working even after the obvious ones are cleaned up:

• Cross-site cookies that follow you from one unrelated site to the next.
• Device and browser fingerprinting — using canvas rendering, audio output, fonts, and WebGL as a near-unique signature, with or without cookies.
• Fingerprint sync IDs that let separate ad networks compare notes and re-identify you even after you clear cookies.
• Persistent “super cookies” stored in places a normal cookie-clear doesn’t reach, which quietly respawn.
• Tracking parameters appended to links (utm_, fbclid, and similar), which travel with a link every time it’s shared.

None of this requires a person to do anything wrong — it’s a byproduct of how the ad-tracking industry monetizes ordinary browsing.

2. Threat model

SilverArrow is built to reduce a specific, well-defined set of risks at the browser level — it is not a general-purpose security suite, and it does not claim to be one. In scope:

• Passive, ad-tech-driven tracking of browsing behavior across sites.
• Re-identification after cookie clearing, via fingerprinting or sync IDs.
• Exposure created by long-lived cookies and cross-site trackers, including the elevated risk of session hijacking and on-path interception that comes with unnecessary session-data retention.
• Tracking metadata carried in shared links.

Out of scope: malware, phishing content, network-level surveillance (e.g., by an ISP or employer), and protecting accounts that are already compromised. SilverArrow reduces your exposure at the browser layer; it is one layer of protection, not a complete security stack.

4. What data SilverArrow does — and doesn’t — touch

SilverArrow’s own policy is to collect nothing. The table below summarizes that in the same plain-language format used by app-store privacy labels.

Full legal detail lives in the Privacy Policy, which also covers what standard web-server logs a hosting provider generates for the marketing site — separate from the extension itself.

5. Design principles

• No black box. The protections above are explainable mechanisms, not an opaque score or model.
• Nothing to configure. Protection is on by default; there are no settings a user (or a child) needs to get right.
• Independent. Project Research LLC is not funded by advertising, which removes the incentive conflict that shapes a lot of “free” tracking-adjacent software.
• Kid-safe by default. Because there’s nothing to configure and nothing collected, the same one-tap protection is appropriate for a child’s device as an adult’s.

6. Limitations & honest caveats

A privacy tool that overstates what it does is itself a trust problem. A few limits worth being direct about:

7. Artificial intelligence disclosure

In the interest of transparency: portions of SilverArrow’s website, documentation, and some supporting imagery and video were created or assisted by AI tools, including Anthropic’s Claude, and reviewed by Project Research LLC before publication. The tracker- and cookie-blocking mechanisms described in Section 3 are rule-based, not AI-driven. Any future AI-driven feature would be disclosed here, in the product interface, and in the relevant extension-store listing before release. See the full Store & AI Disclosures page for store-specific detail.

Conclusion: privacy that doesn’t require expertise

SilverArrow’s premise is that meaningful privacy protection shouldn’t require a computer science degree to use or to trust. That means being specific about what it blocks, honest about what it can’t, and structurally unable to profit from the data it’s built to keep away from advertisers in the first place — because it never collects any.

This paper is a product and technical overview, not a legal document. For the legally operative privacy commitments, see the Privacy Policy and Terms of Use.