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POHow secure is my javascript, how easily can it be exploited?
 

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  1. POHow secure is my javascript, how easily can it be exploited?
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    <p>I'm trying to make this code as secure as possible are there any imediate flaws that jump out? I <em>think</em> I have it locked down pretty tightly, is there anything else you would implement?</p> <pre><code> function CheckPin(){ var str="0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; var strId= document.form1.tbPin.value; var lenId=strId.length; var check=true; //if (lenId != 20) if (!(lenId ==20 || lenId == 10)) { alert("You must enter a 20 or 10 digit pin number."); document.form1.tbPin.focus(); return false; } else { //for(var i=0;i&lt;20;i++) for(var i=0;i&lt;lenId;i++) { check=str.indexOf(strId.charAt(i)); if(check == -1) { alert("Do not use special characters.(e.g. @,#,&amp;) "); document.form1.tbPin.focus(); return false; break; } else { if (i ==19) { break; } } } } if (document.form1.btnChecker.value == 1) { alert("The processing is in progress."); return false; } document.form1.btnChecker.value = 1; } &lt;/script&gt; &lt;script src="../JS/Tags.js" type="text/javascript"&gt;&lt;/script&gt; &lt;script src="../JS/Tags2.js" type="text/javascript"&gt;&lt;/script&gt; </code></pre> <p>Tags.js:</p> <pre><code>var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); </code></pre> <p>Tags2.js:</p> <pre><code>var pageTracker = _gat._getTracker("UA-1376772-6"); pageTracker._initData(); pageTracker._trackPageview(); </code></pre>
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      1. POHow secure is my javascript, how easily can it be exploited?
      1. USGelatin
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    1. CO"How secure is my javascript" - what does that mean?
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      1. POHow secure is my javascript, how easily can it be exploited?
      1. USMitch Wheat
    2. COI know it's impossible to be 100% secure but what I guess I mean is... Is it easily breakable or is there anything that stands out that I should fix?
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    3. COYou haven't told us your requirements. Anything is 100% secure without requirements.
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      1. POHow secure is my javascript, how easily can it be exploited?
      1. USDavid Tang
 

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