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Websites setting X-Content-Security-Policy-Report-Only HTTP header

Values

Most popular variants of the header value (we only show this when there's just a bunch of variants):

Legacy and deprecated variant of the Content-Security-Policy-Report-Only header used by Firefox and MSIE browsers in the initial period.

Reference...

We have seen 0 websites setting the X-Content-Security-Policy-Report-Only HTTP header and 0 unique values of this header.