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Team Geumo Wins Consecutive Victories in K-Cyber Security Challenge
< Professor Sang Kil Cha > < Masters Candidate Kangsu Kim and Researcher Corentin Soulet > Team Geumo, led by Professor Sang Kil Cha from the Graduate School of Information Security, won the K-Cyber Security Challenge in the AI-based automatic vulnerability detection division for two consecutive years in 2018 and 2019. The K-Cyber Security Challenge is an inter-machine hacking competition. Participants develop and operate AI-based systems that are capable of independently identifying software vulnerabilities and gaining operating rights through hacking. The K-Cyber Security Challenge, inspired by the US Cyber Grand Challenge launched by the Defense Advanced Research Projects Agency (DARPA), is hosted by the Ministry of Science and ICT and organized by the Korea Internet and Security Agency. Researcher Corentin Soulet of the School of Computing and master’s student Kangsu Kim of the Graduate School of Information Security teamed up for the competition. Professor Cha, who has led the research on software and systems security since his days at Carnegie Mellon University, succeeded in establishing a world-class system using domestic technology. In a recent collaboration with the Cyber Security Research Center, Professor Cha achieved a ten-fold increase in the speed of binary analysis engines, a key component of AI-based hacking systems. For this accomplishment, he received the Best Paper Award at the 2019 Network and Distributed System Security Workshop on Binary Analysis Research (NDSS BAR). Kangsu Kim said, "It is a great honor to win the competition two years in a row. I will continue to work hard and apply my knowledge to serve society.” (END)
KAIST Develops IoT Platform for Food Safety
A research team led by the KAIST Auto-ID Labs developed a GS1 international standard-based IoTs infrastructure platform dubbed Oliot (Open Language of Internet of Things). This platform will be applied to Wanju Local Food, the nation’s largest cooperative, and will be in operation from April 5. A total of eleven organizations participated in the development of Oliot, with KAIST as the center. This consortium is based on the GS1 international standard-based Oliot platform, which allows collecting and sharing data along the entire process of agrifood from production to processing, distribution, and consumption. It aims at increasing farm incomes and establishing a global ecosystem of domestic agriculture and stockbreeding that provides safe food. Wanju Local Food is now the world’s first local food co-op with a traceability system from the initial stage of production planning to end sales based on GS1 international standards, which will ensure food safety. KAIST has been sharing Oliot data in order to apply it to industries around the world. As of April 2018, approximately 900 enterprises and developers from more than 100 countries have downloaded it. Professor Daeyoung Kim from the School of Computing, who is also Research Director of Auto-ID Labs said, “We are planning to disseminate Oliot to local food cooperatives throughout the nation. We will also cooperate with other countries, like China, Holland, and Hong Kong to create a better ecosystem for the global food industry. “We are currently collaborating with related business to converge Oliot with AI or blockchain technology that can be applied to various services, such as healthcare and smart factories. Its tangible outcome will be revealed soon,” he added. Auto-ID Labs are a global research consortium of six academic institutions that research and develop new technologies for advancing global commerce, partnering with GS1 (Global Standard 1), a non-profit organization that established standards for global commerce such as introducing barcodes to the retail industry. The Auto-ID Labs include MIT, University of Cambridge, Keio University, Fudan University, ETH Zurich/University of St. Gallen, and KAIST. The consortium was supported by the Ministry of Science and ICT as well as the Institute for Information and Communications Technology Promotion for three years from 2015. The launching of Oliot at Wanju Local Food will be held on April 5.
Improving Silver Nanowires for FTCEs with Flash Light Interactions
Flexible transparent conducting electrodes (FTCEs) are an essential element of flexible optoelectronics for next-generation wearable displays, augmented reality (AR), and the Internet of Things (IoTs). Silver nanowires (Ag NWs) have received a great deal of attention as future FTCEs due to their great flexibility, material stability, and large-scale productivity. Despite these advantages, Ag NWs have drawbacks such as high wire-to-wire contact resistance and poor adhesion to substrates, resulting in severe power consumption and the delamination of FTCEs. A research team led by Professor Keon Jae Lee of the Materials Science and Engineering Department at KAIST and Dr. Hong-Jin Park from BSP Inc., has developed high-performance Ag NWs (sheet resistance ~ 5 Ω/sq, transmittance 90 % at λ = 550 nm) with strong adhesion on plastic (interfacial energy of 30.7 J∙m-2) using flash light-material interactions. The broad ultraviolet (UV) spectrum of a flash light enables the localized heating at the junctions of nanowires (NWs), which results in the fast and complete welding of Ag NWs. Consequently, the Ag NWs demonstrate six times higher conductivity than that of the pristine NWs. In addition, the near-infrared (NIR) of the flash lamp melted the interface between the Ag NWs and a polyethylene terephthalate (PET) substrate, dramatically enhancing the adhesion force of the Ag NWs to the PET by 310 %. Professor Lee said, “Light interaction with nanomaterials is an important field for future flexible electronics since it can overcome thermal limit of plastics, and we are currently expanding our research into light-inorganic interactions.” Meanwhile, BSP Inc., a laser manufacturing company and a collaborator of this work, has launched new flash lamp equipment for flexible applications based on the Professor Lee’s research. The results of this work entitled “Flash-Induced Self-Limited Plasmonic Welding of Ag NW Network for Transparent Flexible Energy Harvester (DOI: 10.1002/adma.201603473)” were published in the February 2, 2017 issue of Advanced Materials as the cover article. Professor Lee also contributed an invited review in the same journal of the April 3, 2017 online issue, “Laser-Material Interactions for Flexible Applications (DOI:10.1002/adma.201606586),” overviewing the recent advances in light interactions with flexible nanomaterials. References  Advanced Materials, February 2, 2017, Flash-Induced Self-Limited Plasmonic Welding of Ag NW network for Transparent Flexible Energy Harvester http://onlinelibrary.wiley.com/doi/10.1002/adma.201603473/epdf  Advanced Materials, April 3, 2017, Laser-Material Interactions for Flexible Applications http://onlinelibrary.wiley.com/doi/10.1002/adma.201606586/abstract For further inquiries on research: email@example.com (Keon Jae Lee), firstname.lastname@example.org (Hong-Jin Park) Picture 1: Artistic Rendtition of Light Interaction with Nanomaterials (This image shows flash-induced plasmonic interactions with nanowires to improve silver nanowires (Ag NWs).) Picture 2: Ag NW/PET Film (This picture shows the Ag NWs on a polyethylene terephthalate (PET) film after the flash-induced plasmonic thermal process.)
Professor Dongman Lee Wins the 2016 Korea Internet Award
Professor Dongman Lee of KAIST’s School of Computing received the 11th Korea Internet Award in the category of personal achievement on December 13 at the Creative Economy and Innovation Center in Gyeonggi province. Hosted by the Ministry of Science, ICT and Future Planning of Korea, the Internet Award recognizes leaders in the Internet industry and their contributions. Since 2010, Professor Lee has conducted research on the Internet of Things (IoT) platforms, resulting in the publication of five research papers in Science Citation Index (SCI) journals, ten papers in Korean journals, 30 best papers nominations at international conferences, and the registration of eleven patents. He has also worked on the creation of an IoT ecosystem through his research on object interworking platforms that can provide diverse user-customized services in the IoT environment. His research team built a test bed for applicable IoT platforms on the 8th floor of the IT Convergence Center on campus to implement experiments and collect various data, thereby creating a foundation to carry out research projects in this field. Professor Lee has helped the advancement of an Internet governance system in Korea by researching Internet governance policies, holding important posts in related academic societies including the Chairman of the Korea Internet Governance Alliance (KIGA) Council, and hosting major conferences such as the Asia Pacific Regional Internet Governance Forum (APrIGF).
Academic Award Established in the Honor of Professor Jae-gyu Lee
An academic award has been established to celebrate the academic achievements of Jae-gyu Lee, a chair professor at KAIST’s Business and Management Department. The Korean Society of Management Information Systems (KMIS) created the “Safe Internet Jae-gyu Lee Academic Award” at the 2015 KMIS Fall Symposium held on November 21, 2015 at the Business and Management building of Yonsei University in Seoul. The award will be presented to researchers operating both in and outside Korea, who strive to achieve a clean and safe Internet environment by preventing cyber terrors, attacks, and crimes. Appointed as the President of the Association for Information Systems (AIS), a global academic organization to advance the field of information systems, in July 2015, Professor Lee has adopted the “safe and clean Internet culture” as the official vision of the AIS. During his inaugural speech, he urged the international community including AIS to work together for better solutions to cyber problems. For the implementation of the Safe Internet Jae-gyu Lee Academic Award, KMIS plans to form a committee to select winners through evaluations and recommendations. The award will be presented from 2016 forward. Also, Professor Lee has recently donated USD 87,000 to KMIS to fund research in safe Internet culture and cyberspace security.
KAIST and Oberthur Technologies Agree for Research and Development in Mobile Security
Professor Kwangjo Kim of the School of Computing at KAIST has signed a research and development (R&D) agreement with Marc Bertin, the Chief Technology Officer of Oberthur Technologies (OT), a French security solutions firm, on September 18, 2015 in Paris. Under the agreement, KAIST and OT will conduct joint research on mobile security as well as implement an internship program for KAIST graduate students to work either at OT’s R&D center in Korea or in France. OT has established a research center in Korea in July 2014, which was the fourth of its research centers in Asia. Professor Kim said, “Our goal at KAIST is to cultivate top-level security experts in security technologies. By partnering with such a leader in security technologies as OT, we know that we will both help shape tomorrow’s security solution for the IoT (Internet of Things) space.” In the picture, Professor Kwangjo Kim (left) shakes hands with Marc Bertin, the Chief Technology Officer of Oberthur Technologies (right), after the signing of a memorandum of understanding.
Professor Jae Kyu Lee Appointed the President of Association for Information Systems
Chair Professor Jae Kyu Lee of KAIST’s College of Business was appointed the President of Association for Information Systems (AIS) on July 1, 2015. Professor Lee will serve a one-year term, which will end in June 2016. With four thousand members researching information systems from 90 different nations, AIS is the largest academic society in the fields of information system and business process engineering. Professor Lee has proposed his idea of “the Bright Internet” as the official vision of AIS. Employing this vision, AIS will create technology and systems, as well as sponsor international cooperation to solve fundamental issues of the Internet including concerns over hacking and cyber-related crimes. The extent of damage from cyber-related crimes grows each year. Every day, 56 billion junk emails are sent to computers which are hacked and become “zombie” computers. The social cost of such crimes is estimated to be 400 billion US dollars annually. Based on "the Bright Internet," AIS will build a preventative Internet security system by adopting ground rules that make attackers responsible for the damages from such crimes. The system will also modify technology and other systems to minimize privacy infringement while maintaining security. Finally, the Bright Internet proposes to adopt an international standard for this security system through collaboration with the International Telecommunications Union (ITU). Professor Lee said, “The vision of the Bright Internet started from an awareness that we needed to resolve issues such as Internet addiction, indiscriminate media exposure, and verbal violence. This vision developed by the experts from all around the world will not only bring a revolution of a reliable Internet platform to a global scale but also reshape the Korean Internet platform.”
KAIST Researchers Develops Hyper-Stretchable Elastic-Composite Energy Harvester
A research team led by Professor Keon Jae Lee (http://fand.kaist.ac.kr) of the Department of Materials Science and Engineering at KAIST has developed a hyper-stretchable elastic-composite energy harvesting device called a nanogenerator. Flexible electronics have come into the market and are enabling new technologies like flexible displays in mobile phone, wearable electronics, and the Internet of Things (IoTs). However, is the degree of flexibility enough for most applications? For many flexible devices, elasticity is a very important issue. For example, wearable/biomedical devices and electronic skins (e-skins) should stretch to conform to arbitrarily curved surfaces and moving body parts such as joints, diaphragms, and tendons. They must be able to withstand the repeated and prolonged mechanical stresses of stretching. In particular, the development of elastic energy devices is regarded as critical to establish power supplies in stretchable applications. Although several researchers have explored diverse stretchable electronics, due to the absence of the appropriate device structures and correspondingly electrodes, researchers have not developed ultra-stretchable and fully-reversible energy conversion devices properly. Recently, researchers from KAIST and Seoul National University (SNU) have collaborated and demonstrated a facile methodology to obtain a high-performance and hyper-stretchable elastic-composite generator (SEG) using very long silver nanowire-based stretchable electrodes. Their stretchable piezoelectric generator can harvest mechanical energy to produce high power output (~4 V) with large elasticity (~250%) and excellent durability (over 104 cycles). These noteworthy results were achieved by the non-destructive stress- relaxation ability of the unique electrodes as well as the good piezoelectricity of the device components. The new SEG can be applied to a wide-variety of wearable energy-harvesters to transduce biomechanical-stretching energy from the body (or machines) to electrical energy. Professor Lee said, “This exciting approach introduces an ultra-stretchable piezoelectric generator. It can open avenues for power supplies in universal wearable and biomedical applications as well as self-powered ultra-stretchable electronics.” This result was published online in the March issue of Advanced Materials, which is entitled “A Hyper-Stretchable Elastic-Composite Energy Harvester.” YouTube Link: “A hyper-stretchable energy harvester” https://www.youtube.com/watch?v=EBByFvPVRiU&feature=youtu.be Figure: Top row: Schematics of hyper-stretchable elastic-composite generator enabled by very long silver nanowire-based stretchable electrodes. Bottom row: The SEG energy harvester stretched by human hands over 200% strain.
KAIST Introduces New UI for K-Glass 2
A newly developed user interface, the “i-Mouse,” in the K-Glass 2 tracks the user’s gaze and connects the device to the Internet through blinking eyes such as winks. This low-power interface provides smart glasses with an excellent user experience, with a long-lasting battery and augmented reality. Smart glasses are wearable computers that will likely lead to the growth of the Internet of Things. Currently available smart glasses, however, reveal a set of problems for commercialization, such as short battery life and low energy efficiency. In addition, glasses that use voice commands have raised the issue of privacy concerns. A research team led by Professor Hoi-Jun Yoo of the Electrical Engineering Department at the Korea Advanced Institute of Science and Technology (KAIST) has recently developed an upgraded model of the K-Glass (http://www.eurekalert.org/pub_releases/2014-02/tkai-kdl021714.php) called “K-Glass 2.” K-Glass 2 detects users’ eye movements to point the cursor to recognize computer icons or objects in the Internet, and uses winks for commands. The researchers call this interface the “i-Mouse,” which removes the need to use hands or voice to control a mouse or touchpad. Like its predecessor, K-Glass 2 also employs augmented reality, displaying in real time the relevant, complementary information in the form of text, 3D graphics, images, and audio over the target objects selected by users. The research results were presented, and K-Glass 2’s successful operation was demonstrated on-site to the 2015 Institute of Electrical and Electronics Engineers (IEEE) International Solid-State Circuits Conference (ISSCC) held on February 23-25, 2015 in San Francisco. The title of the paper was “A 2.71nJ/Pixel 3D-Stacked Gaze-Activated Object Recognition System for Low-power Mobile HMD Applications” (http://ieeexplore.ieee.org/Xplore/home.jsp). The i-Mouse is a new user interface for smart glasses in which the gaze-image sensor (GIS) and object recognition processor (ORP) are stacked vertically to form a small chip. When three infrared LEDs (light-emitting diodes) built into the K-Glass 2 are projected into the user’s eyes, GIS recognizes their focal point and estimates the possible locations of the gaze as the user glances over the display screen. Then the electro-oculography sensor embedded on the nose pads reads the user’s eyelid movements, for example, winks, to click the selection. It is worth noting that the ORP is wired to perform only within the selected region of interest (ROI) by users. This results in a significant saving of battery life. Compared to the previous ORP chips, this chip uses 3.4 times less power, consuming on average 75 milliwatts (mW), thereby helping K-Glass 2 to run for almost 24 hours on a single charge. Professor Yoo said, “The smart glass industry will surely grow as we see the Internet of Things becomes commonplace in the future. In order to expedite the commercial use of smart glasses, improving the user interface (UI) and the user experience (UX) are just as important as the development of compact-size, low-power wearable platforms with high energy efficiency. We have demonstrated such advancement through our K-Glass 2. Using the i-Mouse, K-Glass 2 can provide complicated augmented reality with low power through eye clicking.” Professor Yoo and his doctoral student, Injoon Hong, conducted this research under the sponsorship of the Brain-mimicking Artificial Intelligence Many-core Processor project by the Ministry of Science, ICT and Future Planning in the Republic of Korea. Youtube Link: https://www.youtube.com/watchv=JaYtYK9E7p0&list=PLXmuftxI6pTW2jdIf69teY7QDXdI3Ougr Picture 1: K-Glass 2 K-Glass 2 can detect eye movements and click computer icons via users’ winking. Picture 2: Object Recognition Processor Chip This picture shows a gaze-activated object-recognition system. Picture 3: Augmented Reality Integrated into K-Glass 2 Users receive additional visual information overlaid on the objects they select.
KAIST Co-owns the HEVC Patent Portfolio License
MPEG LA, LLC, a firm based in Denver, Colorado, which licenses patent pools covering essential patents required for the use of video coding technology, such as MPEG-2, MPEG-4 Visual (Part 2), and HEVC/H.264, announced the availability of the High Efficiency Video Coding (HEVC) Patent Portfolio License on September 29, 2014. The HEVC standard, also known as H.265 and MPEG-H Part 2, is necessary to improve video coding and transmission efficiency for the Internet, televisions, and mobile gadgets with increased speed and capacity. Through the portfolio license, users can easily obtain patent rights required for the HEVC standard in a single transaction, instead of negotiating separate licenses from multiple patent holders. A total of 23 enterprises currently own essential HEVC patents. KAIST is the only Korean university among the joint patent owners. Collaborating with the Korea Broadcasting System (KBS) and the Electronics and Telecommunications Research Institute (ETRI), Professor Mun-Chul Kim of the Electrical Engineering Department at KAIST developed one of the core patents. For a link to a press release distributed by MPEG LA, LLC, please see: MPEG LA, LLC, September 29, 2014 "MPEG LA, LLC Offers HEVC Patent Portfolio License" http://www.mpegla.com/main/Pages/Media.aspx
Is it possible to identify rumors on SNS?
Rumors sporadically spread with people with fewer followers in the centerResearched over 100 rumors in the US from 2006 to 2009 Is it possible to filter information on SNS such as Twitter and Facebook? A research team led by Professor Mee-Young Cha from the Department of Cultural Technology Graduate School at KAIST, Professor Kyo-Min Jung of Seoul National University, Doctor Wei Chen and Yajun Wang of Microsoft Asia, has developed a technology that can accurately filter out information on Twitter to 90% accuracy. The research not only deduced a new mathematical model, network structure, and linguistic characteristics on rumors from SNS data, but is also expected to enhance the effort to make secure technology to regulate Internet rumors. The team analysed the characteristics of rumors in over 100 widespread cases in the US from 2006 to 2009 on Twitter. The team gathered data, which included a range of areas such as politics, IT, health and celebrity gossips, and their analysis could identify rumors to 90% accuracy. The filtering was more accurate in rumors that included slanders or insults. The research team identified three characteristics of the spread of rumors. Firstly, rumors spread continuously. Normal news spreads widely once and is mentioned rarely again on media, but rumors tend to continue for years. Secondly, rumors spread through sporadic participation of random users with no connections. Rumors start from people with fewer followers and spread to the more popular. This phenomenon is often observed in rumors concerning celebrities or politicians. Lastly, rumors have unique linguistic characteristics. Rumors frequently include words (such as “it may be true,” “although not certain, I think,” “although I cannot fully remember”) related to psychological processes that question, deny, or infer the reliability of the information. Professor Cha said, “This research deduced not only a statistical and mathematical model but also is an integrated research on social psychological theory on the characteristics of rumors that attract great attention from the society based on ample data.” The results were made public in IEEE International Conference on Data Mining last December in Texas, USA.
MOU: KAIST-Korea Internet & Security Agency
KAIST signed a MOU with the Korea Internet & Security Agency for the development of IT and International Security. As a result of the MOU interaction in ▲Exchange of personnel and materials for cooperative research for information protection ▲Information protection policy and technology ▲Education and training for developing information protection personnel, will be increased. Director of Cyber Security Research Center Joo Dae Joon commented, “Cyber-attack on national infrastructure like DDOS attacks can threaten the nation’s system” and that “the two institutes will establish a response system against cyber-attacks and train experts in information protection”.
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