This blog is closed as of 2/2015. @EricLaw left Microsoft in 2012, but was named an IE MVP in '13 & an IE userAgent ( in '14.

August, 2014

  • IEInternals

    Optimizing Sprites

    Today, I’m writing about a topic I personally know little about, but I’ve heard experts mention it in passing for years. I couldn’t find any good references, hence the post below. The first rule for building high performance web sites...
  • IEInternals

    Strict Transport Security

    Ivan Ristic’s meticulously researched Bulletproof SSL & TLS book spurred me to spend some time thinking about the HTTP Strict Transport Security (HSTS) feature under development by the Internet Explorer team and already available in other major...
  • IEInternals

    URL Length Limits

    Today’s question is a simple one: “What is the maximum URL length supported by Internet Explorer?” And the answer, as befitting an IEInternals post, is surprisingly complicated. The simplistic answer is that WinINET.h defines INTERNET_MAX_URL_LENGTH...
  • IEInternals

    Bolstering Protected Mode

    Internet Explorer 7 introduced Protected Mode, a defense-in-depth security feature which relied upon the Windows Vista Integrity Levels (IL) system to mitigate drive-by attacks against the browser. Internet Explorer 10 introduced a stronger version of...
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