Mariusz Z.
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Mariusz Z.

Penetration Tester, Linux/UNIX Security Admin,Intrusion Analyst, CISSP


Gdansk, Poland


I'm Linux Security Administrator & Web Application Penetration Tester with 8 years of experience in the IT field. I'm CISSP (ID# 478556) and OWASP member. My expertise ranges from designing, building secure & robust systems to analysis of subtle software security flaws. I can help you with: - thoroughly security testing your web application (black-box and/or white-box tests) and helping in mitigating detected vulnerabilities - analyzing and assessing vulnerabilities in your application's underlying IT infrastructure - security hardening Linux/UNIX servers/clusters - recommending solutions and best practices on how to design and maintain secure AWS infrastructures - responding to security incident in Linux/UNIX ... moreenvironment, helping in recovery process (rootkit detection, malware removal, etc.) less

Mariusz Z. has added 1 portfolio piece. Create an account to review it.

Work History and Feedback

  • Sep 2012 - Dec 2012

    Need Custom linux Bash Script

    No feedback given

    1 hour
    $12.50 / hr
    $6.25 earned

  • Aug 2012

    Security Code Review of Web Application
    Delivers great work.
    $264.00 earned
    Fixed Price

  • Jul 2012

    URL Rewriting using .htaccess
    A good job. Works well. Thank you
    $22.22 earned
    Fixed Price

  • Feb 2012 - Mar 2012

    Simple procmail sendmail recipe forwarding email
    Very happy with your work. Can only recommend you.
    $22.22 earned
    Fixed Price

  • Oct 2009 - Nov 2009

    Develop Automated Testing of LiveCDs
    5 hours
    $12.50 / hr
    $58.38 earned

Mariusz Z. has more jobs to show. Create an account to review them.


Name Score (out of 5) Time to Complete
Internet Security Test 4.10 Top 10% 34 mins
TCP/IP Test 4.60 Top 10% 37 mins
System Programming Test 4.00 Top 20% 33 mins
Unix Shell Script Test 4.00 Top 10% 37 mins
Amazon Web Services (AWS) Test 3.30 Top 20% 32 mins
Apache Server Test (2.0 Family) 3.40 Above Average 38 mins
Unix Test 4.10 Top 20% 28 mins
Software Testing Test 3.40 Top 20% 40 mins
Programming with C Test 3.50 Top 20% 31 mins
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Work History

100% Job Success
123 hours worked
13 jobs


Less than 30 hrs/week

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