Web Application Security (WAS)

Kestus: 32 academic hours

Claryfied Security koolitusklass, Lõõtsa 12, Tallinn

This training focuses on attacks so that the need for defence is better understood. OWASP project should be the bible of everyone dealing with WebApp development and security and OWASP ASVS (Application Security Verification Standard) is one of the golden standards of WebApp security testing. This training will cover all WebApp attack types and instills this knowledge with lot of hands-on exercises. With first-hand experience in those attacks, participants are better armed with understanding the attacks and why they are conducted.

Trainers will engage participants with lectures, live attack demonstrations and practical examples followed by individual hands-on exercise scenarios. Training is interactive, practical, and besides active participation also full of attack stories that help to change the perspective and understanding of real life security threats.

Koolitus toimub koostöös Clarified Security-ga.

NB! Koolitus on inglise keeles.

Target audience:WebApp developers, maintainers, web server or hosting providers/administrators, information security specialists and managers, testers.

Length: 32 academic hours

The prerequisite for issuing the certificate is full participation in training.

The training topics and description:

Web Application security essentials (4 parts, 8 lectures with practical demos and exercises for each vulnerability, including complex attack scenarios):

Client-Side attacks

  • Introduction, Client-Server system
  • OWASP (Top 10, ASVS)
  • Input data
  • GET vs POST
  • Controlling the thick client (Java applet, Flash, etc.,)
  • XSS (Cross-Site-Scripting)
  • Session security, cookies, session hijacking
  • OSRF/CSRF (On-Site and Cross-Site Request Forgery)
  • UI Redress Attacks (inc ClickJacking, CursorJacking)
  • Combined client side attacks

Server-Side attacks

  • Password security, crypto, brute-force, dictionary, sensitive data
  • Authentication and authorization errors, "remember me" features
  • Business logic implementation errors
  • Direct Object Reference mistakes
  • SQL injection
  • Code and Command injection
  • source code and structure defence, attack code upload, configuration
  • File handling (file extensions, public folder, execution, enumeration and quessing, meta info)
  • File inclusion (LFI, RFI, RCE, NULL-Byte)
  • File upload
  • Other file insertion vectors (log files)
  • Configuration (Java/PHP, error messages (what to show & what to log), Apache, file permissions)
  • Google hacking


You can participate in the training with the Unemployment Insurance Fund training card.

See you at the training!


Marko Belzetski

Pentester (WebApps, mobile), trainer
• GIAC Web Application Penetration Tester (GWAPT)
• GIAC Mobile Device Security Analyst (GMOB)
• GIAC Advanced Smartphone Forensic Analyst (GASF)
• Offensive Security Web Expert (OSWE)

Marko joined the team in August 2016. His focus lies in Android and web application penetration testing. He is also one of the main lecturers of our 4-day Web Application Security course. Previously he has worked in finance and business support along with some freelance web application development.

Marko has a diploma of professional higher education in IT systems development from Tallinn Technical University. His thesis on the subject of Android IPCs was awarded best thesis in the BSc category of his graduation year. He also holds a bachelor's degree in business administration from Northwood University, which he graduated magna cum laude.
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