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 Vincent Liu
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Profile of Vincent Liu

News & Commentary Posts: 11
Vincent Liu (CISSP) is a Managing Partner at Stach & Liu, a security consulting firm providing services to the Fortune 500, global financial institutions, and high-tech startups. In this role, he oversees firm strategy, practice development, and client matters.

Vincent is a well-recognized industry expert with columns in Dark Reading and SecurityWeek. He has presented at Black Hat, ToorCon, InfoSec World, SANS, and Microsoft BlueHat. In addition to regularly being cited by the press, Vincent has been featured on Al Jazeera television news, quoted in USA Today, and interviewed in CSO Magazine. He has also co-authored several industry best-selling books, including: Hacking Exposed Wireless 1st and 2nd Edition; Hacking Exposed Web Applications 3rd Edition, and most recently Web Application Security A Beginner's Guide.

Prior to founding Stach & Liu, Vincent led the Attack & Penetration team for the Global Security unit at Honeywell International. Before that, he was a consultant with the Ernst & Young Advanced Security Centers and an analyst at the National Security Agency. In these roles, he gained extensive experience conducting risk assessments, analyzing source code, and performing penetration testing.

Vincent holds a Bachelor of Science and Engineering from the University of Pennsylvania with a major in Computer Science and Engineering and a minor in Psychology.

He can be reached on Twitter @vinnieliu.
Articles by Vincent Liu

The What And The Why Of Professional Penetration Testing

9/20/2010
Welcome to the first in a series of posts on professional penetration testing. During the course of the next few entries, I will shed light on the often confusing and rarely straightforward world of penetration testing based on my experience during the past decade as both a professional penetration tester and a manager of penetration testing teams.

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CVE-2013-4594
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The Payment for Webform module 7.x-1.x before 7.x-1.5 for Drupal does not restrict access by anonymous users, which allows remote anonymous users to use the payment of other anonymous users when submitting a form that requires payment.

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Published: 2014-10-25
The shell_quote function in python-gnupg 0.3.5 does not properly quote strings, which allows context-dependent attackers to execute arbitrary code via shell metacharacters in unspecified vectors, as demonstrated using "$(" command-substitution sequences, a different vulnerability than CVE-2014-1928....

CVE-2014-1928
Published: 2014-10-25
The shell_quote function in python-gnupg 0.3.5 does not properly escape characters, which allows context-dependent attackers to execute arbitrary code via shell metacharacters in unspecified vectors, as demonstrated using "\" (backslash) characters to form multi-command sequences, a different vulner...

CVE-2014-1929
Published: 2014-10-25
python-gnupg 0.3.5 and 0.3.6 allows context-dependent attackers to have an unspecified impact via vectors related to "option injection through positional arguments." NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-7323.

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