Bug or feature: Mime Type Detection

TOPICS:browser Ebay HTML IE JPG mime mime sniffing mime type detection phishing sniffing

Posted By: Sorin Mustaca March 27, 2009

Also known as MIME Sniffing, this is a feature or bug in IE which is the only browser able to dynamically determine the content type of the document it loads. So, in this case, it detects a plain text document with HTML content instead of a an JPG header.

And the content of the “JPG” file which is text/html:

The URL was reported to Phishtank and CleanMX.
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Sorin Mustaca

Sorin Mustaca, (ISC)2 CSSLP, CompTIA Security+ and Project+, is working since year 2000 in the IT Security industry and worked between 2003-2014 for Avira as Product Manager for the known products used by over 100 million users world-wide. Today he is an independent IT Security Consultant focusing on Cybersecurity, secure software development and security for IoT and Automotive. He is also running his personal blog Sorin Mustaca on Cybersecurity and is the author of the free eBook Improve your security .