Blog - LINE ENGINEERING

TAG ARCHIVES: Security Engineering

FIDO at LINE: FIDO2 server as an open-source project
Kyungjoon Park2021-10-07
Kyungjoon is an engineer on the Security R&D Team.
Hello, this is Kyungjoon from the Security R&D team. I work as a FIDO (Fast Identity Online) engineer. Continuing from our last post FIDO at LINE: A First Step to a World Without Passwords, I would like to introduce you to FIDO2, and also share my experiences from participating in the interoperability testing event hosted by the FIDO Alliance earlier this year in March. Lastly I will talk about our very own LINE FIDO2 server, which will be made available as an open-source project. Introduc
- Security Engineering
- Open Source
Monitoring to prevent game cheating
Lee Myeongjae2019-07-12
He is a security engineer at LINE.
It has been six years since we've began LINE GAME, and over those six years we've been through many experiences. Today, I'd like to share some lessons we've learned along the six-year journey of LINE GAME, specifically focusing on how we used monitoring to prevent game cheating. When I say "game cheat" in this blog post, I am referring to malicious users (abusers) using exploitative means to give themselves an advantage in the game, such as engaging in the act of modifying apps or manipulating
- Security Engineering
- LINE Games
Another one bites the apple!
Junho Jang (ramses)2019-06-14
I am responsible for security assessment at LINE.
Hello, world! I'm Ramses, responsible for security assessment at LINE. My work is to try to hack LINE services and find a way to enhance its security. During my personal time, I find and report security vulnerabilities in third party services also. This is my way of contributing to building a more secure world. Among hackers, this is called a bug hunt. Hackers participate in bug hunting to win a bounty, build their reputation as a hacker or just because they enjoy hacking itself. Many hack
- Security Engineering
FIDO at LINE: A First Step to a World Without Passwords
Kieun Shin2018-12-07
I am working at LINE as a security software engineer and in charge of advanced authentication technologies including FIDO project. Since 2015, I've been a member of FIDO Alliance and contributing to the FIDO specifications and W3C WebAuthn standards.
Getting closer to a world without passwords Today we are happy to announce that LINE has achieved the world’s first FIDO Universal Server certification (as a service provider1) for our authentication server — LINE Authentication Server. With FIDO authentication, LINE users can sign in and authenticate both using biometrics (for example, face and fingerprint), as well as with external hardware tokens like Yubikey and Google Titan key. Regardless of the
LINE and Intertrust Security Summit 2017 Spring, Tokyo 1
Naohisa Ichihara2017-08-17
LINE Engineer
Hello, this is Ichihara from the LINE security team. I am in charge of security consultation for LINE services, providing countermeasures for account hacking and abusing, researching authentication technology, and engaging in standardization activities. Today, I would like to share with you an event titled, "LINE and Intertrust Security Summit 2017 Spring, Tokyo", co-hosted by LINE and Intertrust on May 17. I will cover this event over two posts; this is the first part of the recap. Have a look
- Security Engineering
LINE and Intertrust Security Summit 2017 Spring, Tokyo 2
Naohisa Ichihara2017-08-17
LINE Engineer
Hello, this is Ichihara from the LINE security team. I am in charge of security consultation for LINE services, providing countermeasures for account hacking and abusing, researching authentication technology, and engaging in standardization activities. Today, I would like to share with you an event titled, "LINE and Intertrust Security Summit 2017 Spring, Tokyo", co-hosted by LINE and Intertrust on May 17. I will cover this event over two posts; this is the second part of the recap. Have a look
- Security Engineering
The next step for even safer messaging: Letter Sealing
Shin Kibin2016-08-11
He is a LINE engineer working on the messaging server.
In New generation of safe messaging: “Letter Sealing”, we announced that end-to-end encryption (E2EE) has been made available on LINE messages. But we've made even more improvements to safe messaging over the past few months, expanding Letter Sealing to features other than one-on-one chats. We'd like to share some of them here in this post. What changed? Letter Sealing is now enabled on one-on-one chats by default In the previous version of LINE, you had to opt in to use Letter Seali
- Security Engineering
Results From the LINE Bug Bounty
Lee Myeongjae2015-12-16
He is a security engineer at LINE.
Preparing the Bug Bounty Program Hello. I am MJ, a LINE security engineer. In this post I would like to share the results of the 2015 LINE Bug Bounty (August 24-September 23). As our first ever bug bounty program, we are very pleased with how well the program came together. The core objective of the program was to discover and fix potential vulnerabilities in our services so that our users can enjoy them safely. Several departments lent us a hand in preparing the program and we could not have do
- Security Engineering
- Bug Bounty
LINE Security – Simple, Safe, Secure
LINE Security2014-03-10
LINE Engineer
Greetings, this is the LINE Security Center. LINE has grown into a global messaging app enjoyed by people from all around the world. We are proud to say that LINE not only offers incredible ease of use, but also a secure environment where users’ information is kept safe and secure. Our Security Practices Meet World Class Standards LINE maintains world-class data centers to safeguard user information. These data centers are actively guarded by state-of-the-art security measures and monitor
- Security Engineering

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