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Joint OWASP Cambridge Chapter& KPMG LLP – Security Seminar

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If you have a question about this talk, please contact Adrian Winckles.

Hosted by the Department of Computing & Technology, Anglia Ruskin University, OWASP (Open Web Application Security Project) Cambridge Chapter & KPMG LLP

Guest speakers: Yiannis Chrysanthou (KPMG)

Yiannis has been in the information security field for about 6 years now. Prior to joining KPMG , he was an Ethical Hacking Instructor and a Project Manager for various infrastructure projects.

He is an active member of Team Hashcat. Winner of Crackmeifyoucan competition at Defcon (2nd place in 2013,1st place in 2012, 2nd place in 2011 and 1st place in 2010), Winner of Positive Hackdays / Hashrunner (1st place 2012,2nd place 2013).

Interviewed by BBC and ArsTechnica password-cracking/2/ about password cracking.

Title : Modern Password Cracking

This presentation briefly describes the most popular password cracking techniques. It then suggests an optimized attack that combines several techniques with best performance in mind. The presentation suggests the use of Markov Chains for password recovery, in combination with a range of other modified versions of common attacks.

All attacks work together and make use of common resources such as Dictionaries, and Rulesets to achieve the most optimal output possible. The result is a dynamic, highly flexible and robust attack that can be used by anyone with average computer literacy and limited resources within reasonable time.

Guest speakers: Damien King (KPMG)

Damien has 1st class BSc Applied Computer Science; Distinction & MSc Information Security; Dissertation in Mobile Device Exploitation. He is currently a Penetration Tester at KPMG and likes to hack “stuff”. He also have an interest in automation/scripting in python – hence the exploitation tool he will present.

Title: Filename Enumeration with TildeTool

In certain versions of Microsoft IIS , it is possible to detect the short names of files and directories which have an 8.3 file naming scheme (e.g. FILENA ~1.TXT) equivalent in Windows.

This issue particularly affects .Net websites that are vulnerable to direct URL access, as an attacker can find important files and folders that they are not normally visible.

We will first talk through the steps of how to test for this vulnerability manually, then demonstrate ‘TildeTool’ which automates the process.


17:30 – 17:45 Welcome from the OWASP Cambridge Chapter Leader, Adrian Winckles, Course Leader in Information Security & Forensic Computing, Anglia Ruskin University 17:45 – 18:30 Yiannis Chrysanthou (KPMG) – Modern Password Cracking 18:30 – 19:15 Damien King (KPMG) – Filename Enumeration with TildeTool 19:00 – 19:15 Q & A 19:15 – 20:00 Refreshments & Networking (coffee, tea, juice) in LAB006


To register for this free event, please register online at

Please note there is no automatic notification or confirmation.

The meeting will be held in the Lord Ashcroft Building, Room LAB003 (Breakout Room LAB006 for networking & refreshments).

Please enter through the Helmore Building and ask at reception.

This talk is part of the OWASP (Application Security) Cambridge Chapter Events & Conferences series.

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