Alexandru Razvan Caciulescu

Senior Software Engineer UiPath


Since he was a student of the Faculty of Automatic Control and Computer Science at the Politehnica University of Bucharest, Alex started his career with an internship program at Google Summer of Code (GSoC) in 2014 and 2015 as Software Engineer. In 2016 he took an internship program at Radare Summer of Code and here he contributed to the open source reverse engineering framework. Since 2015 he is Teaching Assistant at the Politehnica University and also, he was part of the DLan Foundation team as Research & Development Engineer. Alex joined the the Security team at UiPath in March 2019.

Fuzzing the Stack for Fun and Profit

Fuzzing is a technique used in the security world to find software vulnerabilities by sending random or malformed inputs to a target application with the intent of discovering unexpected behavior, memory leaks or crashes which may indicate the presence of a security flaw.

A fuzzer ca be categorized based on the prior knowledge it has of the program structure, input structure of the input or the method it uses to generate the inputs.

This talk will present each of these methods and their limitations as well as introduce Smart Greybox Fuzzing, a new approach which leverages a high-level structural representation of the seed file to generate new files.

Key Takeaways:

· Generation-based vs mutation-based fuzzing

· Whitebox vs Greybox vs Blackbox fuzzing

· Dumb vs Smart Fuzzing

· Smart Greybox Fuzzing

Are you the next cyber security superstar?

If you are passionate about an information security topic or you have strong technical skills developing researches on your own, you should definitely Apply at Call for Papers. By submitting you will have the chance to showcase your work to +2000 attendees.

Other speakers joining this year

Constantin Cosmin Craciun

Application Security Engineer Axway

Muhammad Mudassar Yamin

Research Fellow Norwegian University of Science and Technology


Dan Tofan

Security Program Manager SecureWorks

Ready for this year's presentations?

By registering you will unlock access to 60+ speakers and two full days with cyber security news & showcases from worldwide leaders.


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With the dual expertise as a global operator coupled with the agility of an end-to-end integrator, Orange Business Services is a global network-native, digital services company. From connectivity, smart mobility services and the cloud to artificial intelligence (AI), analytics and cybersecurity, Orange Business Services helps businesses at every stage of their data management. Orange Business Services is represented in Romania by the business division of Orange Romania and helps large companies, SMEs and public authorities to transform their organizations through the use of technology and digital information.

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