Bad Cookie

Our mission is to take the mystery out of browser technology and empower you to protect your privacy. Bad Cookie gives you complete visibility into what is happening on your device—translating technical jargon into clear, actionable insights so you can decide what stays and what goes. ★ WHO we built this for ★ - Everyday, non-technical web users who know they are being tracked but don't have the information or tools to see when a bad cookie is affecting their browsing, collecting their data or putting them at risk. - Consumers Facing Price Manipulation: Built for travelers and shoppers sick of artificial price surges on flights, hotel bookings, and retail items triggered by persistent browsing history. - For Everyone Facing Price Manipulation Built for anyone who is sick of artificial price surges on flights, hotel bookings, and retail items triggered by persistent browsing history. - For anyone who has ever talked about buying something out loud and suddenly saw ads for it everywhere: It’s not magic—it’s cross-device cookie tracking. Web trackers don't just stay on one screen. Data brokers combine persistent cookies, location data, and shared network IPs to link your laptop to your phone, your partner’s searches, and your local environment. They know what you want before you even type it in. Bad Cookie scans and identifies risks of exploitive device access and tracking and lets you take control on what to do with them. - Privacy-Conscious Users Left Exposed by False Security People who already take proactive steps—like using VPNs, private browsing, or MFA—without realising these measures offer zero protection when trusted websites mismanage session cookies, run tracking scripts before consent, or drop insecure tokens that bypass 2FA entirely. ★ WHY we created it ★ - To take the mystery out of the technology and help you protect your privacy because you can see what is happening on your devices. Even software engineers have to double-check raw cookie definitions. Bad Cookie translates technical risks into simple ratings (Low, Medium, High, Extreme). - To protect against modern threats Traditional privacy tools focus only on basic ads; Bad Cookie targets stolen session cookies, dynamic price gouging, dark web session hijacking, and pre-consent tracking. - To uphold strict, 100% zero-knowledge privacy We scan your cookies and let you handle rest - no tracking - no storage. Privacy tools shouldn't harvest data. All analysis is done 100% locally on the device with zero cloud uploads. Review the trackers and high risk cookies currently in your browser. Categorised by the sites that put them there and the privacy and security risks they threaten if exposed. Manage take control of your security and privacy and choose what stays and what goes. ★ THE REALITY OF MODERN COOKIE THREATS ★ Traditional security isn't enough anymore. Modern web trackers and malicious scripts have shifted their focus from passwords to session data. Bad Cookie helps protect you against these exact vulnerabilities: • Bypassing Multi-Factor Authentication (MFA): The majority of modern account hijacks no longer target your password. Instead, attackers steal active login session tokens directly from the browser to completely step around 2FA and security prompts. • Mass Exposure on the Dark Web: Billions of active session cookies are harvested from consumer devices every year. These stolen logs allow unauthorized users to instantly hijack active sessions without triggering security alerts. • Rapid Exploitation Windows: Once an insecure session token drops or is exposed, malicious actors can use it to access primary emails, online banking, and personal portals in a matter of days. • Hidden Risks on a Single Device: A single compromised or mismanaged browser can leak dozens of distinct saved credentials and active API tokens. Because these attacks steal already-authenticated sessions, standard tools like VPNs offer zero protection.