(AI-translated)

Koide Laboratory conducts research primarily in cybersecurity, aiming to build secure and high-performance information infrastructures. Our main research topics include Moving Target Defense (MTD), threat tracing for reproducing and analyzing attacks, and dynamic malware analysis, among others.
In addition to theoretical studies, we place strong emphasis on implementation and evaluation, with the goal of establishing technologies that can be deployed in real-world operations.

Koide Laboratory also promotes continuous improvement of knowledge and practical skills through activities such as study sessions, reading groups, and team participation in CTF (Capture The Flag) competitions.

Recent Research Topics

1. Cybersecurity

With the widespread adoption of the Internet, virtually all systems in society have become network-connected, and increasing amounts of data are managed online. At the same time, cyberattacks targeting companies, governments, and organizations have increased, making it essential to protect information assets in terms of Confidentiality, Integrity, and Availability (CIA).

At Koide Laboratory, we analyze attack conditions and impact ranges, and design and evaluate defensive technologies that can be applied to real environments.

2. Moving Target Defense (MTD)

MTD is a cybersecurity approach that avoids keeping a system’s “target” fixed. By dynamically changing system settings and configurations, MTD reduces the probability of successful attacks.
For example, changing a server’s IP address or network/software configuration over time can disrupt an attacker’s assumptions (reconnaissance, identification, and intrusion), and is expected to increase the cost of attacks.

Koide Laboratory applies MTD to multiple IT domains and advances research with the goal of balancing effectiveness (security improvement) and cost (operational overhead and performance impact).

Other topics include…

  • Dynamic malware analysis
  • Network security
  • Countermeasures against phishing websites
  • Code vulnerability analysis
  • Machine-learning-based IDS (Intrusion Detection Systems)

Education and Activities

  • Strengthening fundamentals through reading groups and study sessions aligned with research topics
  • Improving R&D skills through implementation and evaluation
  • Developing practical security skills through team participation in CTFs
    • SECCON Beginners CTF 2025: 31st place overall
  • Active paper presentations at domestic and international conferences
    • FY2024: Domestic presentations **** / International conferences ****
    • FY2025: Domestic symposium 1 / International conferences 5
  • Optional social events such as welcome parties, BBQs, and retreats

For Prospective Students (Undergraduate Students)

Koide Laboratory welcomes students who are interested in cybersecurity. Even if you do not have advanced expertise when joining, we provide an environment where you can learn from the basics through study sessions, reading groups, and support from senior members.

  • This lab may be a good fit if you:

    • Want not only to “use” security technologies but also to “build and evaluate” them
    • Prefer research driven by working implementations and experimental validation
    • Want to learn foundational technologies such as networks and operating systems
    • Want to improve through hands-on practice such as CTFs

  • Typical research flow

    • Basic study → small-scale implementation → experiments & evaluation → presentations and paper/thesis writing
    • Topics are decided through discussion, then developed step by step according to your interests and strengths.

Keywords

  • Cybersecurity: A broad set of technologies and practices for protecting systems and data from attacks and responding appropriately when incidents occur
  • MTD (Moving Target Defense): A defensive approach that dynamically changes system configurations to make attacks harder to succeed
  • Threat tracing: Simulation/tracing techniques to reproduce and analyze attack behavior and impact, supporting the design of countermeasures
  • CTF: A competition-style exercise where participants compete using information security knowledge and technical skills