Docs: Add warning about utilities that collect sensitive info from pg_statistic
columns in <codeph>pg_statistic</codeph>. Everything else is stored in slots, which are groups
of associated columns whose content is identified by a code number in one of the slot's
columns.</p>
- <p><codeph>pg_statistic</codeph> should not be readable by the public, since even statistical
- information about a table's contents may be considered sensitive (for example: minimum and
- maximum values of a salary column). <codeph>pg_stats</codeph> is a publicly readable view on
- <codeph>pg_statistic</codeph> that only exposes information about those tables that are
- readable by the current user.</p>
+ <p>Statistical information about a table's contents should be considered sensitive (for example:
+ minimum and maximum values of a salary column). <codeph>pg_stats</codeph> is a publicly
+ readable view on <codeph>pg_statistic</codeph> that only exposes information about those
+ tables that are readable by the current user.</p>
+ <note type="warning">Diagnostic tools such as <codeph>gpsd</codeph> and
+ <codeph>minirepro</codeph> collect sensitive information from <codeph>pg_statistic</codeph>,
+ such as histogram boundaries, in a clear, readable form. Always review the output files of
+ these utilities to ensure that the contents are acceptable for transport outside of the
+ database in your organization.</note>
<table id="hv156260">
<title>pg_catalog.pg_statistic</title>
<tgroup cols="4">
