General Information

Full Name Nikolaos Chrysaidos
Languages English, Greek


  • 2022-2024
    University of New York in Prague, CZ
  • 2012-2013
    MSc, Cybersecurity
    University of York, UK
    • Thesis - Behavioral Analysis on Detection of Android Botnets
    • Key Modules
      • Identity, Trust, Reputation and their Applications, Cryptography Theory and Applications, Rigour in the Development of High Assurance Systems, Networks and Communications Security (Threats, Attacks and Countermeasures), Malware and Other Malfeasance
  • 2009-2012
    BSc (Hons), Computing
    Swansea University, UK
    • Thesis - Electronic Attendance - Electronic Attendance is both an ASP.NET web service and an Android mobile application, which focuses on the automatic registration of the student presence during lectures/classes.
    • Key Modules
      • Software Engineering (Java, C++), RDBMS II, Distributed Systems, Experts Systems, Project Management, Data Structure, Probability & Statistics, Communication & Telematics, MIS & E-Commerce

Work Experience

  • July 2019 - Dec 2022
    Head, Threat Intelligence Platforms
    • Direct the development, long-term strategic planning and direction of Avast's unified internal (core) & public ( Threat Intelligence Platforms (TIPs) based on the needs of various stakeholders
    • Delivered the core internal threat intelligence platform (TIP) used by over 200 users, including data scientists, malware/threat analysts, hunters, and operators
    • Focused mainly on stakeholders' threat uses-cases, in operations, threat intelligence, big data automation, and other internal research areas. Based on each use case the team developed new innovative solutions and features
    • Unified and integrated services, from other teams, in the platform focused on one common UI/UX for everyone
    • Standardized the service as the core platform for everyone to build their proof-of-concept (PoC) threat services
  • Dec 2015 - Jul 2019
    Head, Mobile Threats & Security
    • Directed the development of our mobile threat intelligence platforms (internal & public) - - while focusing on big regions (Russia, China, and the US). The public version is now being used by more than 500 researchers globally and almost 2M user queries were processed.
    • Guided geographically dispersed teams for new solutions and projects based on the latest advanced mobile threats, security concerns and academic research, to ensure that our users (50M+) will consistently receive state-of-the-art protection.
    • Coordinated and negotiated procedures for the development and tuning of systems for OEM partnerships.
    • Mentored and trained junior analysts in order to make sure that the team is up-to-date, focused on latest research topics by the mobile threat & security community.
    • Optimized (feature selection, training and review)mobile machine learning models in-cooperation with data scientists
    • Build connections and exchanged knowledge with related companies at conferences, meet-ups.
    • Published technical articles in the corporation's blog on latest mobile threats and security incidents.
    • Attended NATO (CCDCOE) Cyber Coalition 2016 as a team leader and successfully completed mobile security-related exercises.
    • Conducted research on an automotive security related project, successfully reporting a bug to Tesla Motors
  • Feb 2014 - Dec 2015
    Mobile Malware & Security Analyst
    • Conducted reverse engineering, static analysis (IDA, Smali/Baksmali, JEB, JD) and dynamic analysis (Droidbox, Logcat, Wireshark, Fiddler, GikDbg) on binaries and handsets.
    • Performed penetration testing and forensic analysis on handsets and smartwatches (Android)
    • Developed internal solutions for faster generation of detections for mobile threats
    • Created detection signatures and YARA rules for mobile threats.