I find it quite strange how you reply to something that is not part of my postings. I did not use or cite the word untrusted anywhere in this thread. In the posting you replied to I was specifically talking about and referring to handling invalid input. And the OP did indeed have a problem with the input that was provided -> Re^4: Can't use an undefined value as a HASH reference.

So basically we're still OnTopic: The code does not handle the provided input very well and fails to properly react to it. As a solution one could choose to either be more lenient in what to accept or one could verify the input more closely and refuse to process it. Both have their merits and they have been discussed extensively now.

(Addendum: I did refer to attackers, but in this case Anonymous was accidentally both Attacker and Target.)

In reply to Re^10: Can't use an undefined value as a HASH reference by Monk::Thomas
in thread Can't use an undefined value as a HASH reference by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.