IT Security (MSc minor specialization in the Computer Science program)

The IT Security minor specialization introduces the main security problems of IT systems and the approaches, methods, and tools used to solve those problems. We put the emphasis on practical applications, while students also get familiar with the security analysis techniques and design principles through the analysis of different security solutions. Those who complete the IT Security minor specialization are able to identify security problems in practical IT systems, analyze and understand such problems, and design and develop appropriate security solutions. The students also learn when and how to apply cryptography to practical security problems.

The IT Security minor specialization consists of three courses (Cryptographic Protocols, Computer Security, and Network Security) and an IT Security Lab. We also supervise student semester and diploma projects.


Cryptographic Protocols (VIHIMA05)

This course introduces problems related to communication security in wired and wireless networks, describes the principles and practical implementations of modern security protocols that address those problems, and sheds light on protocol design issues through the detailed analysis of existing security protocols.

Topics: cryptographic primitives; block encryption modes; message authentication codes; random number generation; key exchange protocols; public key infrastructure; secure communication protocols (TLS, IPsec, WiFi security); secure protocols in resource constrained environments; anonymous communication systems; fair exchange.

Computer Security (VIHIMA06)

The course introduces security problems in computing systems, as well as the principles, practical mechanisms, and tools used to solve them. The term computer is interpreted in a broad sense, and it includes personal computers, servers, mobile devices, and embedded computers. The course covers physical security and OS level security of computers, software security issues at the application level, secure programming, and the problem of malicious software (malware).

Topics: operating systems security; memory corruption attacks and countermeasures; secure programming methods; malware techniques, detection, and analysis; security of mobile platforms; browser security issues; virtualization security; incident response and digital forensics; tamper resistance and physical security.

Network Security (VIHIMB00)

This course gives a detailed introduction into the security problems of computer networks, and it gives an overview of the possible solutions to those problems. It also covers issues related to secure operation of networks in practice, including modern tools and techniques used to ensure security. Students get theoretical knowledge and practical skills that form the basis of secure network operations, and allow them to assess security risks, understand threats and vulnerabilities, select and integrate appropriate security solutions, and to design new security mechanisms. The course also serves as a basis for obatining skills in penetration testing and ethical hacking of networks.

Topics: network penetration testing; firewalls; intrusion detection/prevention systems, SIEMs; IPv6 security; network forensics; honeypots; network infrastructure security (e.g., DNSSEC); botnets; web security; spam filtering; detection of DoS attacks; enterprise network security; industrial control network security; privacy on the web

IT Security Laboratory (VIHIMB01)

This laboratory extends and deepens the knowledge and skills obtained in the courses of the IT Security minor specialization by solving practical, hands-on exercises in real, or close-to-real environments.

Topics: access control in operating systems; software security (buffer overflow and format string attacks); malware analysis; security testing of network and web based systems; network traffic monitoring with sniffing; firewalls and application level proxies; network forensics; PKI and electronic signatures

In the past

  • Information Security (VIHIM100 and VIHIM102)
  • Security Protocols (VIHIM132)
  • Cryptography and its Applications (VIHIM133)
  • Foundations of Secure Electronic Commerce (VIHIM219)
  • Network Security in Practice (VIHIM327)
  • Security labs (VIHIM220 and VIHIM305)
  • Economics of Security and Privacy (VIHIAV15)

Semester and diploma projects

We offer semester and diploma projects that are related to the research activities in the lab, or proposed by our industrial partners, therefore, they provide the opportunity for the students to join our research and development projects, or collaborate with our industrial partners.

If you are a student interested in any of our current project proposals, please, get in touch with the given contact person of the project before officially applying. The contact person will let you know the necessary steps for taking the project officially.

Talent management

We pay special attention to attract and work with students interested in IT security. To discover talented students, we organize the annual CrySyS Security Challenge, which is a hacking contest with exciting problems to solve. For students, the Sec Challenge provides a platform for "learning by doing"; for us, it is a vehicle to discover students talented in hacking.

Those who achieve an outstanding result in the Sec Challenge are invited to join the CrySyS Student Core, which is an invite-only group of exceptionally talented people who proved their ability to solve security problems in a wide range of setups. Core members meet once a week to expand their knowledge by discussing specific topics in system and network security, to prepare for CTF competitions, to socialize, and in general, to have fun by spending time with other geeks of similar interest.

To help students preparing for the Sec Challenge and bootstrapping their IT security activity, we organize an IT Security Bootcamp. Interested in joining and becoming part of a live community? Contact Gábor Pék, CrySyS Student Core leader, or Levente Buttyán, head of the CrySyS Lab.

Members of the CrySyS Student Core formed the !SpamAndHex CTF team to participate at international hacking competitions. However, the team welcomes non-Core members as well. If you are a student, then this can be a great way to learn from Core members, improve your hacking skills, prove your talent, and ultimately, get invited to the CrySyS Student Core. Interested in joining the !SpamAndHex team? Contact Gábor Pék, CrySyS Student Core leader.

Avatao platform

Avatao is an online e-learning platform offering IT security challenges for everyone interested in improving their skills in computer security, web security, applied cryptography, and many more sub-domains of IT security. The development of the platform was started in the CrySyS Lab before it was spun off into a standalone company. However, we continue to use the Avatao platform in our teaching as the infrastructure for the CrySyS Security Challenge, as well as for course homeworks and lab exercises. If you are interested in avatao, please contact Mark Felegyhazi or Gabor Pek.