Reflection on Amit Klein

For those who are in the web application security field need no introduction to his name. He is an expert and by far one of the best in web application security space. He is one of the early starters of the field and has played a major role in the awareness of webappsec. His contribution ranges from not only identifying vulnerabilities and publishing them but also contributing towards standards like OWASP guide, WASC threat classification or web application firewall criteria. And those who are not aware should know he was the one who also contributed towards the solution for UXSS (pdf xss vulnerability). He is also a WASC (Web Application Security Consortium) officer and a board member and co-leads the WASC articles project.

Based out of Israel, he started back in 1997 with Perfecto Technologies (which later became Sanctum), mostly heading security research activities. Sanctum was later acquired by Watchfire in 2004 which is when he left Sanctum / Watchfire. He is currently a CTO of a security company.

Below you will find a list of his articles, contributions, presentations and other details.

Articles:-

A Refreshing Look at Redirection
http://www.securityfocus.com/archive/1/450418

Sending arbitrary HTTP requests with Flash 7/8 (+IE 6.0)
http://www.securityfocus.com/archive/1/443391

Under some conditions, it's possible to steal HTTP credentials using Flash
http://www.securityfocus.com/archive/1/443191

Forging HTTP request headers with Flash
http://www.securityfocus.com/archive/1/441014

IE + some popular forward proxy servers = XSS, defacement (browser cache
poisoning)
http://www.securityfocus.com/archive/1/434931

Path Insecurity
http://www.webappsec.org/lists/websecurity/archive/2006-03/msg00000.html

HTTP Response Smuggling
http://www.securityfocus.com/archive/1/425593

Domain Contamination
http://www.webappsec.org/projects/articles/020606.txt

XST Strikes Back
http://www.securityfocus.com/archive/1/423028

Exploiting the XmlHttpRequest object in IE - Referrer spoofing, and a
lot more...
http://www.securityfocus.com/archive/1/411585

Detecting and Preventing HTTP Response Splitting and HTTP Request
Smuggling Attacks at the TCP Level
http://www.securityfocus.com/archive/1/408135

NTLM HTTP Authentication is Insecure by Design
http://www.securityfocus.com/archive/1/405541

Can HTTP Request Smuggling be blocked by Web Application Firewalls
http://www.webappsec.org/lists/websecurity/archive/2005-06/msg00123.html

DOM Based Cross Site Scripting
http://www.webappsec.org/projects/articles/071105.html

Meanwhile, on the other side of the web server
http://www.itsecurity.com/security.htm?s=3957

HTTP Request Smuggling (with Chaim Linhart, Ronen Heled and Steve Orrin)
http://www.cgisecurity.com/lib/HTTP-Request-Smuggling.pdf

The Insecure Indexing Vulnerability - Attacks Against Local Search Engines
http://www.webappsec.org/projects/articles/022805-clean.html

Detecting and Testing HTTP Response Splitting Using a Browser
http://www.securityfocus.com/archive/107/378523

Blind XPath Injection
http://www.packetstormsecurity.org/papers/bypass/Blind_XPath_Injection_20040518.pdf

Divide and Conquer - HTTP Response Splitting, Web Cache Poisoning
Attacks, and Other Topics
http://www.packetstormsecurity.org/papers/general/whitepaper_httpresponse.pdf

Secure Coding Practices for Microsoft ASP.NET
http://www.cgisecurity.com/lib/WhitePaper_Secure_Coding_Practices_VSdotNET.pdf

XS(T) attack variants which can, in some cases, eliminate the need for TRACE
http://www.securityfocus.com/archive/107/308433

Cross Site Scripting Explained
http://crypto.stanford.edu/cs155/CSS.pdf

Hacking Web Applications Using Cookie Poisoning
http://www.cgisecurity.com/lib/CookiePoisoningByline.pdf

Contributions:-

OWASP guide to building secure web application
http://internap.dl.sourceforge.net/sourceforge/owasp/OWASPGuide2.0.1.pdf

WAFEC
http://www.webappsec.org/projects/wafec/

WASC's Threat Categorization (TC)
http://www.webappsec.org/projects/threat/

Co-lead the WASC articles project
http://www.webappsec.org/projects/articles/guidelines.shtml

Presentations:-

OWASP AppSec Europe Conference 2006 – “HTTP Message Splitting, Smuggling and Other Animals”

CERT 2002 Conference, August 2002 - "WWW Forensics"

FM'99 Congress, September 1999 - "A Perfect Verification: Combining Model Checking with Deductive Analysis to Verify Real-Life Software"

Memberships:-

Amit is WASC officer and board member.

Companies worked for:-

Sanctum, Cyota (RSA security)

Education:-

B. Sc. Mathematics and Physics

Email:-

aksecurity__at__gmail_dot_com

And this just doesn't end here, you will see a lot more coming from him. He is a must follow figure of the webappsec field.

Next Friday – Reflection on RSnake