They take your ability to see what they're taking.
Code that detects auditing/compliance tools and modifies behavior to evade detection. The Volkswagen diesel of martech. Scripts check for headless browsers, known bot signatures, and compliance tool user agents, then disable or modify tracking to appear compliant during audits while maintaining full surveillance for real users.
What It Costs You
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.
GTM Attack Surface
Third-party scripts execute with full privileges on every page load. Dangerous code patterns, external dependencies, and data interception turn marketing infrastructure into attack vectors. One compromised dependency compromises the entire site.
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.