They take your users' behavior patterns and fingerprint them.
Analyzing patterns in user behavior (keystrokes, mouse movements) for identification or profiling. Scripts attach event listeners for mousemove, keydown, scroll, and touch events to build behavioral profiles that persist across sessions and sites.
What It Costs You
CAC Subsidization
Visitor data captured on a site can flow into data broker networks and identity graphs, eventually surfacing in competitor prospecting tools. The original company paid to acquire the traffic; competitors pay pennies to intercept the lead.
Signal Corruption
Overlapping tracking mechanisms corrupt attribution data. Multiple sources claim credit for single conversions. Pipeline metrics diverge from reality. Marketing decisions get made on numbers that can’t be trusted.
Legal Tail Risk
Pre-consent data collection, undisclosed data sharing, and consent signal violations create regulatory exposure. Class actions and regulatory fines can exceed entire annual marketing budgets. Liability sits with the site owner, not the vendor.
Related Advisories
No published advisories reference this code yet.
Investigations are ongoing.
Blackout uses security frameworks to protect AGAINST vendors, not FOR them. We do not notify vendors. We do not provide remediation windows. If you're using a vendor flagged by this code, the advisory is your evidence.