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The checked observation does not show the condition described above, or the measurement is unavailable. A missing measurement is inconclusive.
← All detection signalsDETECTION SIGNALEXPLANATION01 EXPECTED RESPONSE 02 POSSIBLE ANOMALY
Canvas 2D Data Poisoning (Farbling)
A closer look at the browser, network, or interaction evidence behind this signal.
What we test
2D rendering of an invisible 1x1 test image returned non-zero or noisy pixel data.
Why it matters
This observation provides context for reviewing a session. Assess it alongside other independent evidence and the conditions under which it was collected.
How to interpret the response
Bot-managed browser
The condition described above may appear in an automated or proxied session. It can also have legitimate causes and needs corroboration.
Browser versions, device settings, extensions, accessibility tools, and network conditions can affect results. These examples are illustrative, not a specific visitor record.