OWASP Zed Attack Proxy Project

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The Zed Attack Proxy (ZAP) is an easy to use integrated penetration testing tool for finding vulnerabilities in web applications.

It is designed to be used by people with a wide range of security experience and as such is ideal for developers and functional testers who are new to penetration testing.

ZAP provides automated scanners as well as a set of tools that allow you to find security vulnerabilities manually.

ZAP-Download.png The current version of ZAP is 1.4.0.

ZAP is ideal for Security Regression Tests - see this video on Youtube

For more videos see the links on the wiki videos page.

Want a very quick introduction? See the project pamphlet.

For a slightly longer introduction see the project presentation.

For more details about ZAP, including the full user guide, see the wiki.

funds to OWASP earmarked for Zed Attack Proxy.

ZAP Add Alert Screen Shot

ZAP Help Screen Shot
ZAP History Filter Screen Shot
ZAP Search Tab Screen Shot

Latest News:

  • 2012/06/13 Using ZAP for Security Regression tests video published
  • 2012/06/04 Version 1.4.0 downloaded over 10,000 times
  • 2012/05/28 Simon's Introduction to ZAP talk at App Sec USA becomes the most watched OWASP video on vimeo
  • 2012/04/23 3 ZAP related Google Summer of Code 2012 projects accepted. To find out how these are progressing please see their wiki pages.
  • 2012/04/08 Version 1.4.0 released
  • 2012/02/10 Version 1.3.4 downloaded over 10,000 times
  • 2012/02/01 OWASP ZAP is named the Toolsmith Tool of the Year for 2011!

ZAP is developed by a worldwide team of volunteers.

But we have also been helped by many organizations, either either financially or by encouraging their employees to work on ZAP:

Some of ZAP's characteristics:

  • Easy to install (just requires java 1.6)
  • Ease of use a priority
  • Comprehensive help pages
  • Fully internationalized
  • Under active development
  • Open source
  • Free (no paid for 'Pro' version)
  • Cross platform
  • Involvement actively encouraged

ZAP is a fork of the well regarded Paros Proxy.

ZAP supports the following languages:

  • English
  • Brazilian Portuguese
  • Chinese
  • Danish
  • French
  • German
  • Greek
  • Indonesian
  • Japanese
  • Persian
  • Polish
  • Spanish

Details of previous releases can be found here

Release 1.4.0

Version 1_4_0 has just been released.

Compared to previous releases, the 1.4.0 release adds the following main features:

  • Support for ZAP-Extensions (Plugable extensions)
  • Syntax highlighting in the Response Panel
  • fuzzdb integration
  • Parameter analysis
  • Enhanced XSS scanner
  • Tons of bug-fixes and minor improvements

Future Releases

Future releases are likely to include:

  • Fuzzing analysis
  • API extensions
  • Enhancements and fixes logged on the issues page

Involvement in the development of ZAP is actively encouraged!

You do not have to be a security expert in order to contribute.

Some of the ways you can help:

Feature Requests

Please raise new feature requests as enhancement requests here: http://code.google.com/p/zaproxy/issues/list

If there are existing requests you are also interested in then please 'star' them - that way we can see which features people are most interested in and can prioritize them accordingly.


Please use the zaproxy-develop Google Group for feedback:

  • What do like?
  • What don't you like?
  • What features could be made easier to use?
  • How could the help pages be improved?

Log issues

Have you had a problem using ZAP?

If so and its not already been logged then please report it


Are you fluent in another language? Can you help translate ZAP into that language?

If so then please get in touch.


If you fancy having a go at adding functionality to ZAP then please get in touch via the zaproxy-develop Google Group.

Again, you do not have to be a security expert to contribute code - working on ZAP could be great way to learn more about web application security!

If you actively contribute to ZAP then you will be invited to join the project.

What does this OWASP project offer you?
What releases are available for this project?
what is this project?
Name: OWASP Zed Attack Proxy Project (home page)
Purpose: This project, OWASP Zed Attack Proxy Project (ZAP), provides an easy to use integrated penetration testing tool for testing web applications.

It is designed to be used by people with a wide range of security experience and as such is ideal for developers and functional testers who a new to penetration testing.

ZAP provides automated scanners as well as a set of tools that allow you to find security vulnerabilities manually.

License: Apache License 2.0
who is working on this project?
Project Leader(s):
how can you learn more?
Project Pamphlet: View
Project Presentation: View
Mailing list: Mailing List Archives
Project Roadmap: View
Main links:
Key Contacts
  • Contact Psiinon @ to contribute to this project
  • Contact Psiinon @ to review or sponsor this project
  • Contact the GPC to report a problem or concern about this project or to update information.
current release
ZAP 2.3.1 - 21/05/2014 - (download)
Release description: This is a bug fix release

For more details see http://code.google.com/p/zaproxy/wiki/HelpReleases2_3_1

Rating: Projects/OWASP Zed Attack Proxy Project/GPC/Assessment/ZAP 2.3.1
last reviewed release
ZAP 1.3.0 - 06/06/2011 - (download)
Release description: This release includes the following significant changes:
  • Fuzzing: Strings in a response can now be fuzzed to try to find vulnerabilities. Anti CRSF tokens can be detected and automatically regenerated when fuzzing. This functionality is based on code from the OWASP JBroFuzz project.
  • Dynamic SSL certificates: The support for SSL connections was improved and simplified. User's can now create their own root certificate and distribute this into their HTTP clients.
  • Daemon mode: Starting ZAP with the "-daemon" command line option will cause it to run in the background in 'headless' mode, meaning that no UI is displayed.
  • API: An initial API has been implemented in XML, JSON and HTML.
  • Beanshell integration: The BeanShell is an interactive Java shell that can be used to execute BeanShell scripts. BeanShell integration in OWASP ZAP enables you to write scripts using the ZAP functions and data set.
  • Full internationalisation: All displayed strings are now fully internationalised.
  • Localisation: Out of the box support for the following languages: English, Brazilian Portuguese, Chinese, French, German, Greek, Indonesian, Japanese, Polish, Spanish
Rating: Greenlight.pngGreenlight.pngGreenlight.png Stable Release - Assessment Details

other releases