KSL

Publications

2024

• An Efficient State-Saving Mechanism for Out-of-band Container Migration
  Yuki Asakura and Kenichi Kourai
  In Proceedings of the 15th IEEE International Conference on Cloud Computing Technology and Science (CloudCom 2024), pages 63-70, December 10, 2024.
• Technical issues on an experiment of OpenFlow-based multi-destination VM migration across the US and Japan
  Yohei Okamoto, Masahiro Shibata, Kenichi Kourai, and Masato Tsuru
  In Proceedings of the 20th International Conference on IP/IoT & Processing + Optical Network (iPOP 2024), June 27, 2024, Hakodate.
• Parallel and Consistent Live Checkpointing and Restoration of Split-memory VMs
  Tokito Murata and Kenichi Kourai
  Future Generation Computer Systems, Volume 159, pages 432-443, May 20, 2024.

2023

• Xfas: Fault Recovery by Externally Controlling OS Behavior [slide]
  Kento Kimura and Kenichi Kourai
  In Proceedings of the 16th IEEE/ACM International Conference on Utility and Cloud Computing (UCC 2023), Article No.9, 10 pages, December 5, 2023, Taormina.
• VM Migration Support for Secure Out-of-band VNC with Shadow Devices [slide]
  Tomoya Unoki and Kenichi Kourai
  In Proceedings of the 8th IEEE Cyber Science and Technology Congress (CyberSciTech 2023), pages 298-305, November 15, 2023, Abu Dhabi.
• SSdetector: Secure and Manageable Host-based IDS with SGX and SMM [slide]
  Yoshimichi Koga and Kenichi Kourai
  In Proceedings of the 22nd IEEE International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom-2023), pages 539-548, November 2, 2023, Exeter. (Acceptance rate: 30%)
• SEmigrate: Optimizing Data Protection with VM Introspection [slide]
  Shuhei Horio, Kouta Takahashi, and Kenichi Kourai
  In Proceedings of the 28th IEEE Pacific Rim International Symposium on Dependable Computing (PRDC 2023), pages 88-98, October 25, 2023, Singapore. (Acceptance rate: 34%)
• Reliable and Accurate Fault Detection with GPGPUs and LLVM [slide]
  Yuichi Ozaki, Sousuke Kanamoto, Hiroaki Yamamoto, and Kenichi Kourai
  In Proceedings of the 16th IEEE International Conference on Cloud Computing (CLOUD 2023), pages 540-546, July 8, 2023, Chicago (hybrid).
• Memory-virtualizing and -devirtualizing VM migration with Private Virtual Memory [slide]
  Yuji Muraoka and Kenichi Kourai
  In Proceedings of IEEE International Conference on Computers, Software, and Applications (COMPSAC 2023), pages 91-96, June 27, 2023, Turin.
• Efficient VM Migration for Multiple Destination Sites across a Japan-US OpenFlow Testbed
  Kazumi Igarashi, Akira Nagata, Yohei Okamoto, Masahiro Shibata, Kenichi Kourai, and Masato Tsuru
  In Proceedings of the 10th International Workshop on Computer and Networking Experimental Research using Testbeds (CNERT 2023), May 20, 2023, virtual.
  (won Best Paper Runner Up)

2022

• GPU-based First Aid for System Faults [slide]
  Kento Kimura and Kenichi Kourai
  In Proceedings of the 13th ACM SIGOPS Asia-Pacific Workshop on Systems (APSys 2022), pages 38-45, August 23, 2022, Singapore (virtual). (Acceptance rate: 53%)
• Secure Offloading of User-level IDS with VM-compatible OS Emulation Layers for Intel SGX [slide]
  Takumi Kawamura and Kenichi Kourai
  In Proceedings of the 15th IEEE International Conference on Cloud Computing (CLOUD 2022), pages 157-166, July 12, 2022, Barcelona (hybrid). (Acceptance rate: 22%)

2021

• MigSGX: A Migration Mechanism for Containers Including SGX Applications [slide]
  Kenji Nakashima and Kenichi Kourai
  In Proceedings of the 14th IEEE/ACM International Conference on Utility and Cloud Computing (UCC 2021), Article No.6, pages 1-10, December 7, 2021, Leicester (hybrid). (Acceptance rate: 34%)
• Prevention of a DoS Attack with Copy-on-write in the Overlay Filesystem [slide]
  Hirofumi Satou and Kenichi Kourai
  In Proceedings of the 19th International Conference on Dependable, Autonomic and Secure Computing (DASC 2021), pages 76-83, October 28, 2021, Calgary (virtual). (Acceptance rate: 21%)
• Transpacific Testbed for Real-Time Experimentation
  Oluwaseyi Ajayi, Tarek Saadawi, Huseyn Huseynov, Masato Tsuru, and Kenichi Kourai
  In Proceedings of IEEE Workshop on Satellite and Non-Terrestrial Networks, 5G World Forum, pages 505-510, October 14, 2021, Montreal (virtual).
• Hardening the Security of Mobile Edge Computing through Bio-inspired VM Introspection
  Huseyn Huseynov, Tarek Saadawi, and Kenichi Kourai
  Big Data and Cognitive Computing (BDCC), MDPI, Volume 5, Number 4, Article number 52, 21 pages, October 8, 2021.
• Optimizing VMs across Multiple Hosts with Transparent and Consistent Tracking of Unused Memory [slide]
  Soichiro Tauchi, Kenichi Kourai, and Lukman Ab. Rahim
  In Proceedings of the 14th IEEE International Conference on Cloud Computing (CLOUD 2021), pages 467-477, September 9, 2021, Chicago (virtual). (Acceptance rate: 24%)
• Secure Offloading of Intrusion Detection Systems from VMs with Intel SGX [slide]
  Tomoharu Nakano and Kenichi Kourai
  In Proceedings of the 14th IEEE International Conference on Cloud Computing (CLOUD 2021), pages 297-303, September 8, 2021, Chicago (virtual).
• Bio-inspired VM Introspection for Securing Collaboration Platforms
  Huseyn Huseynov, Tarek Saadawi, and Kenichi Kourai
  In Proceedings of the 13th International Conference on Intelligent Networking and Collaborative Systems (INCoS 2021), pages 32-41, September 2, 2021, Taichung (virtual).
• Optimized Memory Encryption for VMs across Multiple Hosts [slide]
  Shuhei Horio, Kouta Takahashi, Kenichi Kourai, and Lukman Ab. Rahim
  In Proceedings of the 13th International Workshop on Information Network Design (WIND 2021), INCoS 2021, pages 307-315, September 1, 2021, Taichung (virtual).

2020

• Fine-grained Autoscaling with In-VM Containers and VM Introspection [slide]
  Kohei Ueki and Kenichi Kourai
  In Proceedings of the 13th IEEE/ACM International Conference on Utility and Cloud Computing (UCC 2020), pages 155-164, December 9, 2020, Leicester (virtual). (Acceptance rate: 31%)
• Performance Evaluation of Cache Management in Network Storage
  Naomichi Fukuda, Kenichi Kourai, and Saneyasu Yamaguchi
  In Proceedings of the 2020 International Conference on Emerging Technologies for Communications (ICETC 2020), December 3, 2020, virtual.
• Cache Replacement Based on LSTM in the Second Cache in Virtualized Environment
  Taisei Miura, Kenichi Kourai, and Saneyasu Yamaguchi
  In Proceedings of the 11th International Workshop on Advances in Networking and Computing (WANC 2020), CANDAR 2020, November 27, 2020, Okinawa (virtual).
• VM Migration for Secure Out-of-band Remote Management with Nested Virtualization [slide]
  Tomoya Unoki and Kenichi Kourai
  In Proceedings of the 13th IEEE International Conference on Cloud Computing (CLOUD 2020), pages 517-521, October 24, 2020, Beijing (virtual). (Acceptance rate incl. short papers: 25%)
• Flexible and Efficient Partial Migration of Split-memory VMs [slide]
  Takahiro Kashiwagi and Kenichi Kourai
  In Proceedings of the 13th IEEE International Conference on Cloud Computing (CLOUD 2020), pages 248-257, October 22, 2020, Beijing (virtual). (Acceptance rate: 21%)
• Efficient and Flexible Checkpoint/Restore of Split-memory Virtual Machines [slide]
  Tokito Murata and Kenichi Kourai
  In Proceedings of International Conference on Computational Intelligence (ICCI 2020), pages 270-275, October 8, 2020, virtual.
• Cache Management with Fadvise Based on LFU
  Naomichi Fukuda, Taisei Miura, Kenichi Kourai, and Saneyasu Yamaguchi
  In Proceedings of the 8th IEEE International Workshop on Architecture, Design, Deployment & Management of Networks & Applications (ADMNET 2020), COMPSAC 2020, pages 1125-1130, July 13, 2020, Madrid (virtual).
• Transparent IDS Offloading for Split-memory Virtual Machines
  Kouki Yamato, Kenichi Kourai, and Tarek Saadawi
  In Proceedings of the 44th IEEE Computers, Software, and Applications Conference (COMPSAC 2020), pages 833-838, July 13, 2020, Madrid (virtual).
• Optimization of Parallel Applications under CPU Overcommitment
  Tokiko Takayama and Kenichi Kourai
  In Proceedings of the 44th IEEE Computers, Software, and Applications Conference (COMPSAC 2020), pages 51-60, July 13, 2020, Madrid (virtual).
• Virtual Machine Introspection for Anomaly-Based Keylogger Detection
  Huseyn Huseynov, Kenichi Kourai, Tarek Saadawi, and Obinna Igbe
  In Proceedings of IEEE International Workshop on Network Function Virtualization, SDN, and Edge Computing, HPSR 2020, 6 pages, May 12, 2020, Newark (virtual).
• Secure VM Management with Strong User Binding in Semi-Trusted Clouds
  Keisuke Inokuchi and Kenichi Kourai
  Journal of Cloud Computing: Advances, Systems and Applications, Volume 9, Article number 3, 22 pages, January 17, 2020.
• Flexible Service Consolidation with Nested Virtualization and Library Operating Systems [final ver.]
  Kenichi Kourai and Kouta Sannomiya
  Software: Practice and Experience, Volume 50, Issue 1, pages 3-21, January 2020.

2019

• Efficient Migration of Large-memory VMs Using Private Virtual Memory [slide]
  Yuji Muraoka and Kenichi Kourai
  In Proceedings of the 11th International Workshop on Information Network Design (WIND 2019), INCoS 2019, pages 380-389, September 5, 2019, Oita.
• Detecting System Failures with GPUs and LLVM [slide]
  Yuichi Ozaki, Sousuke Kanamoto, Hiroaki Yamamoto, and Kenichi Kourai
  In Proceedings of the 10th ACM SIGOPS Asia-Pacific Workshop on Systems (APSys 2019), pages 47-53, August 19, 2019, Hangzhou.
• Consistent Offline Update of Suspended Virtual Machines in Clouds [slide]
  Kenichi Kourai and Yuji Shiota
  In Proceedings of the 4th IEEE Cyber Science and Technology Congress (CyberSciTech 2019), pages 58-65, August 5, 2019, Fukuoka.
• Low-cost and Fast Failure Recovery Using In-VM Containers in Clouds [slide]
  Tomonori Morikawa and Kenichi Kourai
  In Proceedings of the 17th IEEE International Conference on Dependable, Autonomic and Secure Computing (DASC 2019), pages 572-579, August 5, 2019, Fukuoka.
  (won Best Paper Award)

2018

• UVBond: Strong User Binding to VMs for Secure Remote Management in Semi-Trusted Clouds [slide]
  Keisuke Inokuchi and Kenichi Kourai
  In Proceedings of the 11th IEEE/ACM International Conference on Utility and Cloud Computing (UCC 2018), pages 213-222, December 20, 2018, Zurich. (Acceptance rate: 20%)
  (won Best Paper Award)
• Secure Out-of-band Remote Management of Virtual Machines with Transparent Passthrough [slide]
  Shota Futagami, Tomoya Unoki, and Kenichi Kourai
  In Proceedings of the 2018 Annual Computer Security Applications Conference (ACSAC 2018), pages 430-440, December 6, 2018, San Juan. (Acceptance rate: 20%)
• S-memV: Split Migration of Large-memory Virtual Machines in IaaS Clouds [slide]
  Masato Suetake, Takahiro Kashiwagi, Hazuki Kizu, and Kenichi Kourai
  In Proceedings of the 2018 IEEE International Conference on Cloud Computing (CLOUD 2018), pages 285-293, July 5, 2018, San Francisco. (Acceptance rate: 20%)
• Efficient Page-cache Encryption for Smart Devices with Non-volatile Main Memory [slide]
  Kenichi Kourai, Naoto Fukuda, and Tomohiro Kodama
  In Proceedings of the 33rd ACM/SIGAPP Symposium on Applied Computing (SAC 2018), pages 1109-1115, April 11, 2018, Pau. (Acceptance rate: 25%)

2017

• Resource Cages: A New Abstraction of the Hypervisor for Performance Isolation Considering IDS Offloading [slide]
  Kenichi Kourai, Sungho Arai, Kousuke Nakamura, Seigo Okazaki, and Shigeru Chiba
  In Proceedings of the 9th IEEE International Conference on Cloud Computing Technology and Science (CloudCom 2017), pages 170-177, December 13, 2017, Hong Kong. (Acceptance rate: 29%)
• Secure IDS Offloading with Nested Virtualization and Deep VM Introspection [slide]
  Shohei Miyama and Kenichi Kourai
  In Proceedings of the 22nd European Symposium on Research in Computer Security (ESORICS 2017), part II, pages 305-323, September 13, 2017, Oslo. (Acceptance rate: 16%)

2016

• Seamless and Secure Application Consolidation for Optimizing Instance Deployment in Clouds [slide]
  Kenichi Kourai and Kouta Sannomiya
  In Proceedings of the 8th IEEE International Conference on Cloud Computing Technology and Science (CloudCom 2016), pages 318-325, December 15, 2016, Luxembourg. (Acceptance rate: 26%)
• VMBeam: Zero-copy Migration of Virtual Machines for Virtual IaaS Clouds [slide]
  Kenichi Kourai and Hiroki Ooba
  In Proceedings of the 35th IEEE Symposium on Reliable Distributed Systems (SRDS 2016), pages 121-126, September 27, 2016, Budapest.
• Split Migration of Large Memory Virtual Machines [slide]
  Masato Suetake, Hazuki Kizu, and Kenichi Kourai
  In Proceedings of the 7th ACM SIGOPS Asia-Pacific Workshop of Systems (APSys 2016), 8 pages, August 4, 2016, Hong Kong. (Acceptance rate: 41%)
• Virtual Machine Co-migration for Out-of-band Remote Management
  Sho Kawahara and Kenichi Kourai
  IPSJ Journal of Information Processing, Vol.24, No.4, pages 669-679, July 15, 2016.
• Secure Offloading of Legacy IDSes Using Remote VM Introspection in Semi-trusted Clouds [slide]
  Kenichi Kourai and Kazuki Juda
  In Proceedings of the 9th IEEE International Conference on Cloud Computing (CLOUD 2016), pages 43-50, June 28, 2016, San Francisco. (Acceptance rate: 15%)

2015

• Host OS Page Cache Hit Ratio Improvement based on Guest OS Page Drop
  Hiroki Sugimoto, Kenichi Kourai, and Saneyasu Yamaguchi
  In Proceeding of the 17th International Conference on Information Integration and Web-based Applications & Services (iiWAS 2015), December 13, 2015, Brussels.
• Secure Out-of-band Remote Management Using Encrypted Virtual Serial Consoles in IaaS Clouds [slide]
  Kenichi Kourai and Tastuya Kajiwara
  In Proceedings of the 14th IEEE International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom-15), pages 443-450, August 22, 2015, Helsinki. (Acceptance rate: 28%)
• Analysis of the Impact of CPU Virtualization on Parallel Applications in Xen [slide]
  Kenichi Kourai and Riku Nakata
  In Proceedings of the 13th IEEE International Symposium on Parallel and Distributed Processing with Applications (ISPA-15), pages 132-139, August 21, 2015, Helsinki. (Acceptance rate: 27%)
• Zero-copy Migration for Lightweight Software Rejuvenation of Virtualized Systems [slide]
  Kenichi Kourai and Hiroki Ooba
  In Proceedings of the 6th ACM Asia-Pacific Workshop on Systems (APSys 2015), 8 pages, July 27, 2015, Tokyo. (Acceptance rate: 29%)
• Virtual AMT for Unified Management of Physical and Virtual Desktops [slide]
  Kenichi Kourai and Kouki Oozono
  In Proceedings of the 39th IEEE Computer Software and Applications Conference (COMPSAC 2015), pages 928-937, July 1, 2015, Taichung. (Acceptance rate: 20%)

2014

• Co-migration of Virtual Machines with Synchronization for IDS Offloading
  Kenichi Kourai and Hisato Utsunomiya
  IPSJ Online Transactions, Vol.7, pages 157-167, December 2014.
  (reprinted from IPSJ Transactions on Advanced Computing Systems (ACS), Vol.7, No.4, pages 45-55, December 2014)
• The Continuity of Out-of-band Remote Management across Virtual Machine Migration in Clouds [slide]
  Sho Kawahara and Kenichi Kourai
  In Proceedings of the 7th IEEE/ACM International Conference on Utility and Cloud Computing (UCC 2014), pages 176-185, December 9, 2014, London. (Acceptance rate: 19%)
  (won 2014 Excellent Student Award of the IEEE Fukuoka Section)
• Efficient VM Introspection in KVM and Performance Comparison with Xen [slide]
  Kenichi Kourai and Kousuke Nakamura
  In Proceedings of the 20th IEEE Pacific Rim International Symposium on Dependable Computing (PRDC 2014), pages 192-202, November 20, 2014, Singapore.
• Efficient and Fine-grained VMM-level Packet Filtering for Self-protection
  Kenichi Kourai, Takeshi Azumi, and Shigeru Chiba
  International Journal of Adaptive, Resilient and Autonomic Systems (IJARAS), Vol.5, No.2, pages 83-100, April-June 2014.
  (Special Issue on the 9th IEEE International Conference on Autonomic and Trusted Computing)

2013

• Synchronized Co-migration of Virtual Machines for IDS Offloading in Clouds [slide]
  Kenichi Kourai and Hisato Utsunomiya
  In Proceedings of the 5th IEEE International Conference on Cloud Computing Technology and Science (CloudCom 2013), pages 120-129, December 2, 2013, Bristol. (Acceptance rate: 18%)
• Security Enhancement of Out-of-band Remote Management in IaaS Clouds
  Tomohisa Egawa, Naoki Nishimura, and Kenichi Kourai
  IPSJ Online Transactions, Vol.6, pages 111-120, Septempber 2013.
  (reprinted from IPSJ Transactions on Advanced Computing Systems (ACS), Vol.6, No.3, pages 108-117, September 2013)

2012

• Dependable and Secure Remote Management in IaaS Clouds [slide]
  Tomohisa Egawa, Naoki Nishimura, and Kenichi Kourai
  In Proceedings of the 4th IEEE International Conference on Cloud Computing Technology and Science (CloudCom 2012), pages 411-418, December 2012, Taipei. (Acceptance rate incl. short papers: 25%)
• A Secure Framework for Monitoring Operating Systems Using SPEs in Cell/B.E. [slide]
  Kenichi Kourai and Takuya Nagata
  In Proceedings of the 18th IEEE Pacific Rim International Symposium on Dependable Computing (PRDC 2012), pages 41-50, November 2012, Niigata.
• A Self-protection Mechanism against Stepping-stone Attacks for IaaS Clouds [slide]
  Kenichi Kourai, Takeshi Azumi, and Shigeru Chiba
  In Proceedings of the 9th IEEE International Conference on Autonomic and Trusted Computing (ATC 2012), pages 539-546, September 2012, Fukuoka.
  (won Best Paper Award)
• Preventing Information Leakage from Virtual Machines' Memory in IaaS Clouds
  Hidekazu Tadokoro, Kenichi Kourai, and Shigeru Chiba
  IPSJ Online Transactions, Vol.5, pages 156-166, August 2012.
  (reprinted from IPSJ Transactions on Advanced Computing Systems (ACS), Vol.5, No.4, pages 101-111, August 2012)

2011

• Fast Software Rejuvenation of Virtual Machine Monitors
  Kenichi Kourai and Shigeru Chiba
  IEEE Transactions on Dependable and Secure Computing (TDSC), Vol.8, No.6, pages 839-851, November/December 2011.
  (won IEEE Computer Society Japan Chapter Young Author Award 2012)
• A Practical Process Scheduler across Virtual Machines
  Hidekazu Tadokoro, Kenichi Kourai, and Shigeru Chiba
  IPSJ Transactions on Advanced Computing Systems (ACS), Vol.4, No.3, pages 100-114, May 2011. (in Japanese)
• Fast and Correct Performance Recovery of Operating Systems Using a Virtual Machine Monitor [slide]
  Kenichi Kourai
  In Proceedings of the 2011 ACM International Conference on Virtual Execution Environments (VEE 2011), pages 99-110, March 2011. (Acceptance rate: 29%)

2010

• A Secure System-wide Process Scheduler across Virtual Machines [slide]
  Hidekazu Tadokoro, Kenichi Kourai, and Shigeru Chiba
  In Proceedings of the 16th IEEE Pacific Rim International Symposium on Dependable Computing (PRDC'10), pages 27-36, December 2010.
• CacheMind: Fast Performance Recovery Using a Virtual Machine Monitor [slide]
  Kenichi Kourai
  In Proceedings of the 2nd Workshop on Proactive Failure Avoidance, Recovery and Maintenance (PFARM), DSN 2010, pages 86-92, June 28, 2010, Chicago.

2009

• Application-Level Scheduling Using AOP
  Kenichi Kourai, Hideaki Hibino, and Shigeru Chiba
  Transactions on Aspect-Oriented Software Development V (TAOSD), Vol.5490, pages 1-44, June 2009.
• BitVisor: A Thin Hypervisor for Enforcing I/O Device Security
  Takahiro Shinagawa, Hideki Eiraku, Kouichi Tanimoto, Kazumasa Omote, Syoichi Hasegawa, Takashi Horie, Manabu Hirano, Kenichi Kourai, Yoshihiro Ohyama, Eiji Kawai, Kenji Kono, Shigeru Chiba, Yasushi Shinjo, and Kazuhiko Kato
  In Proceedings of the 2009 ACM International Conference on Virtual Execution Environments (VEE 2009), pages 121-130, March 2009. (Acceptance rate: 35%)

2008

• Process Scheduling among Virtual Machines
  Hidekazu Tadokoro, Kenichi Kourai, and Shigeru Chiba
  IPSJ Transactions on Advanced Computing Systems (ACS), Vol.1, No.2, pages 124-135, August 2008. (in Japanese)
• Secure File Access Control for Desktop PCs
  Yuji Takizawa, Kenichi Kourai, Shigeru Chiba, and Yoshisato Yanagisawa
  IPSJ Transactions on Advanced Computing Systems (ACS), Vol.1, No.2, pages 275-285, August 2008. (in Japanese)
• XenLASY: Aspect-oriented Profiler for Tracing I/O Processing on Xen
  Yoshisato Yanagisawa, Kenichi Kourai, and Shigeru Chiba
  IPSJ Transactions on Programming, Vol.49, No.SIG 1 (PRO 35), pages 51-62, January 2008. (in Japanese)

2007

• A Fast Rejuvenation Technique for Server Consolidation with Virtual Machines [slide]
  Kenichi Kourai and Shigeru Chiba
  In Proceedings of the 37th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN 2007), pages 245-254, June 2007. (Acceptance rate: 25%)
  (invited to IEEE TDSC as one of the best papers)
• An Aspect-Oriented Language for Exception Handling
  Natsuko Kumahara, Kenichi Kourai, and Shigeru Chiba
  IPSJ Transactions on Programming, Vol.48, No.SIG 10 (PRO 33), pages 189-198, June 2007. (in Japanese)
• KLASY: System for Source-based Binary-level Dynamic Weaving
  Yoshisato Yanagisawa, Kenichi Kourai, Shigeru Chiba, and Rei Ishikawa
  IPSJ Transactions on Programming, Vol.48, No.SIG 10 (PRO 33), pages 176-188, June 2007. (in Japanese)
• Aspect-oriented Application-level Scheduling for J2EE Servers [slide]
  Kenichi Kourai, Hideaki Hibino, and Shigeru Chiba
  In Proceedings of the 6th ACM International Conference on Aspect-Oriented Software Development (AOSD.07), pages 1-13, March 2007. (Acceptance rate: 18%)

2006

• A Dynamic Aspect-oriented System for OS Kernels
  Yoshisato Yanagisawa, Kenichi Kourai, Shigeru Chiba, and Rei Ishikawa
  In Proceedings of the 5th ACM International Conference on Generative Programming and Component Engineering (GPCE'06), pages 69-78, October 2006. (Acceptance rate: 35%)
• Session-aware Queue Scheduling for Improving Performance of Web Applications under Overload
  Masahiro Matsunuma, Kenichi Kourai, Hideaki Hibino, Yoshiki Sato, Shigeru Chiba
  JSSST Computer Software, Vol.23, No.2, pages 199-210, April 2006. (in Japanese)

2005

• A Secure Intrusion Detection Architecture using Virtual Distributed Monitoring Environments
  Kenichi Kourai and Shigeru Chiba
  IPSJ Transactions on Advanced Computing Systems, Vol.46, No.SIG 16 (ACS 12), pages 108-118, December 2005. (in Japanese)
• Difference of Degradation Schemes among Operating Systems --- Experimental analysis for web application servers ---
  Hideaki Hibino, Kenichi Kourai, Shigeru Chiba
  In Proceedings of Workshop on Dependable Software - Tools and Methods, DSN 2005, pages 172-179, June 2005.
• HyperSpector: Virtual Distributed Monitoring Environments for Secure Intrusion Detection [slide]
  Kenichi Kourai and Shigeru Chiba
  In Proceedings of the 1st ACM/USENIX International Conference on Virtual Execution Environments (VEE'05), pages 197-207, June 2005. (Acceptance rate: 29%)
• A Source-level Kernel Profiler based on Dynamic Aspect-Orientation
  Yoshisato Yanagisawa, Shigeru Chiba, Kenichi Kourai
  In Proceedings of the 2nd Dynamic Aspects Workshop (DAW05), pages 41-45, March 2005.

2004

• A Pleasant Job Scheduling System
  Ryo Kurita, Shigeru Chiba, and Kenichi Kourai
  IPSJ Transactions on Advanced Computing Systems, Vol.45, No.SIG 3 (ACS 5), pages 29-37, March 2004. (in Japanese)
• Personal Networks Integrating a VPN with Execution Environments of Hosts
  Kenichi Kourai, Toshio Hirotsu, Koji Sato, Osamu Akashi, Kensuke Fukuda, Tosiharu Sugawara, and Shigeru Chiba
  JSSST Computer Software, Vol.21, No.1, pages 2-12, January 2004. (in Japanese)
• An Implementation of Flexible-playtime Video Skimming
  Shigemi Aoyagi, Kenichi Kourai, Koji Sato, Toshihiro Takada, Toshiharu Sugawara, and Rikio Onai
  In Proceedings of the 2004 SPIE/ACM Conference on Multimedia Computing and Networking (MMCN 2004), pages 178-186, January 2004.

2003

• Secure and Manageable Virtual Private Networks for End-users [slide]
  Kenichi Kourai, Toshio Hirotsu, Koji Sato, Osamu Akashi, Kensuke Fukuda, Toshiharu Sugawara, and Shigeru Chiba
  In Proceedings of the 28th Annual IEEE Conference on Local Computer Networks (LCN 2003), pages 385-394, October 2003. (Acceptance rate: 33%)
• A Flexible Policy Control Architecture for Inter-AS Routing
  Osamu Akashi, Kenichi Kourai, Kensuke Fukuda, Toshio Hirotsu, Koji Sato, Mitsuru Maruyama, and Toshiharu Sugawara
  In Proceedings of the 7th Asia-Pacific Network Operations and Management Symposium (APNOMS 2003), pages 294-298, October 2003.
• An Intranet Protection Mechanism Based on Virtual Network Architecture
  Toshio Hirotsu, Kensuke Fukuda, Kenichi Kourai, Osamu Akashi, Koji Sato, and Toshiharu Sugawara
  IPSJ Transactions on Advanced Computing Systems, Vol.44, No.SIG 11 (ACS 3), pages 180-190, August 2003. (in Japanese)
• Realizing Secure Intranet Servers by Using a Mechanism Changing User Authority
  Shinichi Suzuki, Yasushi Sinjo, Kenichi Kourai, Kozo Itano, and Shigeru Chiba
  IPSJ Transactions on Advanced Computing Systems, Vol.44, No.SIG 10 (ACS 2), pages 86-96, July 2003. (in Japanese)
• Agents Support for Flexible Inter-AS Policy Control
  Osamu Akashi, Kenichi Kourai, Koji Sato, Toshio Hirotsu, Mitsuru Maruyama and Toshiharu Sugawara
  In Proceedings of the 2003 IEEE/IPSJ Symposium on Applications and the Internet (SAINT) Workshop, pages 294-298, January 2003.

2001

• A Secure Mechanism for Changing Access Restrictions of Servers
  Kenichi Kourai and Shigeru Chiba
  Journal of Information Processing Society of Japan, Vol.42, No.6, pages 1492-1502, June 2001. (in Japanese)
• A Secure Access Control Mechanism against Internet Crackers [poster]
  Kenichi Kourai and Shigeru Chiba
  In Proceedings of the 21st IEEE International Conference on Distributed Computing Systems (ICDCS-21), pages 743-746, April 2001.

1998

• Multi-level Protection: A New Fail-safe Mechanism for Extensible Operating Systems
  Kenichi Kourai, Shigeru Chiba, and Takashi Masuda
  Journal of Information Processing Society of Japan, Vol.39, No.11, pages 3054-3064, November 1998. (in Japanese)
• Operating System Support for Easy Development of Distributed File Systems [slide]
  Kenichi Kourai, Shigeru Chiba, and Takashi Masuda
  In Proceedings of the 10th IASTED International Conference on Parallel and Distributed Computing and Systems (PDCS'98), pages 551-554, October 1998.

1997

• Weak Protection for Reflective Operating Systems
  Shigeru Chiba, Takeshi Nishimura, Kenichi Kourai, Atsushi Ohnoki, and Takashi Masuda
  In Object-Oriented Technology: ECOOP'97 Workshop Reader, LNCS Vol.1357, pages 62-67, June 1997.

Talks/Posters

2024

• Protecting Nested VMs with AMD SEV
  Kazuki Takiguchi and Kenichi Kourai
  The 15th ACM SIGOPS Asia-Pacific Workshop on Systems (APSys 2024), poster, September 4, 2024, Kyoto.
• Secure and Efficient Monitoring of Confidential VMs using eBPF
  Kanta Uesugi and Kenichi Kourai
  The 15th ACM SIGOPS Asia-Pacific Workshop on Systems (APSys 2024), poster, September 4, 2024, Kyoto.

2023

• System Monitoring in Virtual Machines by Injecting eBPF Programs (not refereed)
  Kyosuke Hori and Kenichi Kourai
  The 2nd International Practical Applications Seminar on Electrical Engineering and Computer Science (IPAS 2023) poster, December 25, 2023, Kokura.
• Secure Privacy Control inside Clouds with AMD SEV (not refereed)
  Naoya Ando and Kenichi Kourai
  The 2nd International Practical Applications Seminar on Electrical Engineering and Computer Science (IPAS 2023) poster, December 25, 2023, Kokura.
• Saving Container States outside VMs for Lightweight Container Migration (not refereed)
  Yuki Asakura and Kenichi Kourai
  The 2nd International Practical Applications Seminar on Electrical Engineering and Computer Science (IPAS 2023) poster, December 25, 2023, Kokura.
• Secure IDS Offloading for Confidential VMs (not refereed)
  Kenichi Kourai
  Workshop on Computation and Communication Innovation, October 4, 2023, New York.
• Experimentation with Bio-Inspired VM Introspection (not refereed)
  Tarek Saadawi, Huseyn Huseynov, and Kenichi Kourai
  Workshop on Computation and Communication Innovation, October 3, 2023, New York.

2022

• Secure Monitoring of Virtual Machines Protected by AMD SEV in Public Clouds (not refereed)
  Tomoharu Nono and Kenichi Kourai
  The 10th International Symposium on Applied Engineering and Sciences (SAES 2022), December 13, 2022, virtual.
• Optimized Memory Encryption and Integrity Checking of Virtual Machines across Multiple Hosts (not refereed)
  Shuhei Horio and Kenichi Kourai
  The 10th International Symposium on Applied Engineering and Sciences (SAES 2022), December 13, 2022, virtual.
• Secure Intrusion Detection by Combining Intel SGX and SMM (not refereed)
  Yoshimichi Koga and Kenichi Kourai
  The 10th International Symposium on Applied Engineering and Sciences (SAES 2022), December 13, 2022, virtual.

2021

• Improvement of ARC Considering Negative Locality of Reference in Virtualized Environment
  Naomichi Fukuda, Kenichi Kourai, and Saneyasu Yamaguchi
  2021 IEEE International Conference on Big Data (BigData 2021), poster, December 16, 2021.
• AI-based Cache Replacement in Virtualized Environment
  Taisei Miura, Kenichi Kourai, and Saneyasu Yamaguchi
  2021 International Conference on Emerging Technologies for Communications (ICETC 2021), poster, December 3, 2021.
• Cache Replacement Algorithm for Extending Locality of Reference in the Second Cache
  Naomichi Fukuda, Kenichi Kourai, and Saneyasu Yamaguchi
  2021 International Conference on Emerging Technologies for Communications (ICETC 2021), poster, December 1, 2021.

2020

• Optimizing VMs across Multiple Hosts by Considering Unused Memory (not refereed)
  Soichiro Tauchi and Kenichi Kourai
  The 8th International Symposium on Applied Engineering and Sciences (SAES 2020), December 17, 2020, virtual.
• Efficient and Flexible Live Checkpoint/Restore for VMs across Multiple Hosts (not refereed)
  Tokito Murata and Kenichi Kourai
  The 8th International Symposium on Applied Engineering and Sciences (SAES 2020), December 17, 2020, virtual.

2019

• Secure Offloading of Intrusion Detection Systems with Intel SGX in Clouds (not refereed)
  Tomoharu Nakano and Kenichi Kourai
  The 7th International Symposium on Applied Engineering and Sciences (SAES 2019), November 11, 2019, Putrajaya.
• Secure Monitoring of Virtual Machines with Memory Split into Multiple Hosts [slide]
  Kenichi Kourai and Kouki Yamato
  Keynote at the 7th International Symposium on Applied Engineering and Sciences (SAES 2019), November 11, 2019, Putrajaya.

2018

• Virtual Machine Migration for Secure Out-of-band Remote Management in Clouds [poster]
  Tomoya Unoki, Shota Futagami, and Kenichi Kourai
  CCNY-Kyutech Joint Workshop poster, June 18, 2018, Iizuka.
• Migration of Virtual Machines Running across Multiple Hosts [poster]
  Takahiro Kashiwagi, Masato Suetake, and Kenichi Kourai
  CCNY-Kyutech Joint Workshop poster, June 18, 2018, Iizuka.
• Virtualized Adaptable Computing with Elastic Split-memory Virtual Machines [slide]
  Kenichi Kourai
  CCNY-Kyutech Joint Workshop, June 18, 2018, Iizuka.

2015

• Dynamic and Secure Application Consolidation with Nested Virtualization and Library OS in Clouds [poster]
  Kouta Sannomiya and Kenichi Kourai
  ACM APSys 2015 poster, July 27, 2015, Tokyo.
• Secure IDS Offloading with Nested Virtualization in Untrusted Clouds [poster]
  Shouhei Miyama and Kenichi Kourai
  ACM APSys 2015 poster, July 27, 2015, Tokyo.

2012

• Secure Out-of-band Remote Management in Infrastructure as a Service [poster]
  Tomohisa Egawa, Naoki Nishimura, and Kenichi Kourai
  USENIX Security Symposium'12 poster, August 2012.

2010

• Accurate and Efficient Process Scheduling among Virtual Machines [poster]
  Hidekazu Tadokoro, Kenichi Kourai, and Shigeru Chiba
  ASPLOS 2010 poster, March 2010.

2008

• Preventing Performance Degradation on Operating System Reboots [slide]
  Kenichi Kourai
  In Volume 2 Proceedings of the 5th International Service Availability Symposium (ISAS 2008), Fast Abstract, May 2008.

Invited talks

• Infrastructure for Privacy-centric Information Processing
  Kenichi Kourai
  Invited Talk at CENTRA 7 Cloud-edge Fusion (CEF) Symposium, February 6, 2024, Tokyo.
• Secure Monitoring of Virtual Machines with Memory Split into Multiple Hosts [slide]
  Kenichi Kourai and Kouki Yamato
  Keynote at the 7th International Symposium on Applied Engineering and Sciences (SAES 2019), November 11, 2019, Putrajaya.
• Modularity in Virtualized Systems
  Kenichi Kourai
  Keynote at the 3rd Workshop on Modularity In Systems Software (MISS 2013), March 2013.

Books

• Handbook of Software Aging and Rejuvenation
  Chapter 9: Application to Operating Systems
  Kenji Kono, Kenichi Kourai, and Hiroshi Yamada, World Scientific, pages 229-259, May 2020.
• Portable ID Management Framework for Security Enhancement of Virtual Machine Monitors
  Manabu Hirano, Takeshi Okuda, Eiji Kawai, Takahiro Shinagawa, Hideki Eiraku, Kouichi Tanimoto, Shoichi Hasegawa, Takashi Horie, Seiji Mune, Kazumasa Omote, Kenichi Kourai, Yoshihiro Oyama, Kenji Kono, Shigeru Chiba, Yasushi Shinjo, Kazuhiko Kato, and Suguru Yamaguchi, Chapter 24 in Engineering the Computer Science and IT, In-Tech, pages 477-488, October 2009.