+ <varlistentry><term><option>--no-allow-insecure-repositories</option></term>
+ <listitem><para>Forbid the update command to acquire unverifiable
+ data from configured sources. Apt will fail at the update command
+ for repositories without valid cryptographically signatures.
+
+ Configuration Item: <literal>Acquire::AllowInsecureRepositories</literal>.</para></listitem>
+ </varlistentry>
+