Prime Strategy Co., Ltd. is established.
Began offering services for web system development, website construction, web marketing, and server hosting
Headquarters moved to Minato-ku, Tokyo. Began offering services for web system development, website construction, web marketing, and server hosting.
Established in Jakarta, Indonesia (liquidated the following year)
PT. Prime Strategy Indonesia established in Jakarta, Indonesia (liquidated the following year)
Business blog construction system Prelog
Released and began support for the business blog construction system Prelog.
Released the web application development framework PrimeStrategy® WebPlatform ver1.0
CMS development and services
Began offering services and CMS development for PrimeStrategy® WebPlatform
Began offering services mainly for WordPress
Switched focus from PrimeStrategy® WebPlatform to WordPress and began offering services mainly for WordPress.
Headquarters moved to Kaigan, Minato-ku, Tokyo
Released WEXAL® CMS Server and WEXAL® Policy Mail Server.
Additional prints requested after only three weeks
WordPress Textbook published by SB Creative. Additional prints requested after only three weeks.
Headquarters moved to Otemachi.
Learn While Making Smartphone Compatible Sites from Softbank Creative Corporation
Published “WordPress Textbook 2: Learn While Making Smartphone Compatible Sites” from Softbank Creative Corporation (No. 1 overall ranking on Amazon).
Joined as a sponsor of the PHP Engineer Certification Organization
Changed company name to PT. Prime Strategy Indonesia
Acquired management rights to a local subsidiary in Indonesia and changed the company name to “PT. Prime Strategy Indonesia”
Published by O’Reilly Japan Inc.
Supervised translation of “Web Application Development with WordPress” published by O’Reilly Japan Inc.
By Softbank Creative Co.
Published “Textbook of WordPress Ver.4.x” by Softbank Creative Co.
By O’Reilly Japan Inc.
Published “WordPress in Detail” by O’Reilly Japan Inc.
The World’s Fastest WordPress Execution Environment
Announces KUSANAGI, the World’s Fastest WordPress Execution Environment
KUSANAGI for Microsoft Azure Preview Release Released
Prime Strategy Singapore Pte. Ltd. and PRIME STRATEGY NEW YORK, INC.
Established “PRIME STRATEGY SINGAPORE PTE. LTD.” in Singapore and “PRIME STRATEGY NEW YORK, INC.” in New York, U.S.A. KUSANAGI for SoftLayer is released
Sakura Cloud, ConoHa, AWS, and others
KUSANAGI for Sakura Cloud, ConoHa, and Z.com are released
With PHP7 support and additional features
KUSANAGI Version 7.7 with PHP7 support, KUSANAGI for S-Port, and IDCF Cloud are released
KUSANAGI for Cloudn is released
Support for HTTP/2 and Let’s Encrypt
KUSANAGI Version 7.8 with support for HTTP/2 and Let’s Encrypt is released.
KUSANAGI for ALTUS is released
KUSANAGI Runs on Docker Beta Released
KUSANAGI for VMware is released
KUSANAGI Official Support Service is now available. concrete5 releases KUSANAGI version 8.0 with Drupal 8 support.
EX-CLOUD, NIFTY Cloud, Sakura VPS
KUSANAGI for EX-CLOUD, NIFTY Cloud, and Sakura VPS are released
KUSANAGI for CPI is released
KUSANAGI for GCP and HyperCloud are released
KUSANAGI for CloudGarage is released
KUSANAGI for TENTEN is released
With Ruby on Rails Support; KUSANAGI for EVA released
KUSANAGI Version 8.1.0 with Ruby on Rails Support and KUSANAGI for EVA are released
KUSANAGI on Alibaba Cloud is released
High-speed Japanese full-text search functionality
KUSANAGI for CLARA ONLINE is released. KUSANAGI version 8.1.2-2, a Mroonga-compatible version that provides high-speed Japanese full-text search functionality, is released.
Certified as Microsoft Gold Competency Partner (Gold Cloud Platform). KUSANAGI Version 8.0.2 with PostgreSQL Support Released.
KUSANAGI for PostgreSQL is released
First Japanese domestic company to do so
KUSANAGI for GCP, the Google Cloud Platform™️ version of KUSANAGI, registered on Google Cloud Launcher (first Japanese domestic company to do so)
KUSANAGI for ASPIRE and Vagrant are released. Cumulative number of KUSANAGI cloud deployments exceeds 20,000 units.
KUSANAGI Version 8.4.1 with Deployment Function Support released
Support for deployment functions
KUSANAGI Version 8.4.0, an update with WAF support and other security enhancements, is released.
WAF support, SELinux, TLS1.3
KUSANAGI version 8.4.1 with SELinux and TLS1.3 support is released. Recognized as an Advanced Consulting Partner of the AWS Partner Network.
KUSANAGI for Link Bare Metal Cloud is released
Launch of KUSANAGI Business Edition. KUSANAGI for AWS Business Edition is released
First Japanese company to do so
KUSANAGI for Oracle Cloud is registered in Partner Image Catalog in Oracle Cloud Marketplace (first Japanese company to do so)
KUSANAGI Cloud Deployment Tops 30,000 Units
An acceleration engine for web systems
KUSANAGI for GCP Business Edition is released. Announces WEXAL® Page Speed Technology, an acceleration engine for web systems. Launch of “WEXAL® Mobile Display Acceleration Service
Highest-end version of the series
nginx / Apache compatible “Shibboleth Authentication” functionality is now available in KUSANAGI Business Edition. KUSANAGI Runs on Docker Regular Version Released. KUSANAGI Premium Edition, the highest-end version of the KUSANAGI series, is now available. KUSANAGI for Microsoft Azure Premium Edition is released. KUSANAGI for Microsoft Azure is certified as Microsoft Preferred Solution. KUSANAGI on Alibaba Cloud Business Edition is released.
KUSANAGI on FUJITSU Cloud Service for OSS is released
KUSANAGI for GCP Premium Edition is released. KUSANAGI for AWS Premium Edition is released. KUSANAGI Business Edition on FUJITSU Cloud Service for OSS is released. KUSANAGI Premium Edition on FUJITSU Cloud Service for OSS is released.
Supporting AI-based dynamic strategy generation and dedicated management screen
In line with the company-wide AI Company Declaration
Released “WEXAL® Page Speed Technology Version 2.0” supporting AI-based dynamic strategy generation “Dynamic” and dedicated management screen “WEXAL® Manager. Launch of “WEXAL® Reverse Proxy Limited Edition. WEXAL® for Microsoft Azure Reverse Proxy Limited Edition is released. Launched WEXAL® Reverse Proxy Managed Service. Onimaru David” AI is officially hired as an employee in line with the company-wide AI Company Declaration.
KUSANAGI Cloud Deployment Tops 40,000 Units
A free practice test site
PRIME STUDY, a free practice test site, is now available
Free of charge
Head office relocated to Uchikanda, Chiyoda-ku, Tokyo. ONIMARU®, a website optimization diagnostic tool, is released free of charge
Major hosting company
Launched a technology alliance with X server, a major hosting company.
KUSANAGI Cloud Deployment Tops 50,000 Units
By APAC CIO outlook magazine
Named one of the “Top 10 Cloud Solution Providers of 2021” and “Company of the year” by APAC CIO outlook magazine.
At the World Dissemination Competition
KUSANAGI, the ultra high-speed CMS execution environment, receives the Tokyo Metropolitan Government’s Innovative Service Special Award at the Tokyo Metropolitan Government’s “World Dissemination Competition.
KUSANAGI 9 for GCP, KUSANAGI 9 for GCP Business Edition is released
For GMO Internet Inc.’s ConoHa WING and Name.com servers
With Automattic Inc., Entrust Inc., AirTrip Corp., and FinTech Global Incorporated
WEXAL® Page Speed Technology® is now available free of charge to users of GMO Internet Inc.’s ConoHa WING by GMO and Name.com rental servers. Automattic Inc. and Prime Strategy Co., Ltd. Partner to Offer WPScan as Part of Prime Strategy’s Managed Services. Capital and business alliance with Entrust Inc., AirTrip Corp. is formed.
KUSANAGI Cloud Deployment Tops 60,000 Units. KUSANAGI Strategic Alliance Partner with GMO GlobalSign Holdings K.K. KUSANAGI for Cloud VPS by GMO is launched. Cyber Security Cloud, Inc. signs distributorship agreement for WAF automated operation service “WafCharm”.
Transitioned from a company with a board of corporate auditors to a company with an audit committee.
Launch of “KUSANAGI 9” for AlmaLinux OS 8 and KUSANAGI 9 for Xserver VPS.
KUSANAGI 9 supporting “Movable Type” is released. KUSANAGI Signs KUSANAGI Strategic Alliance Partner Agreement with NTT PC Communications Incorporated. KUSANAGI 9 for WebARENA Indigo is released. CentOS Stream9-compatible version of KUSANAGI 9 and AlmaLinux OS 9 compatible version of KUSANAGI 9 are released.
Released KUSANAGI 9 for WebARENA Indigo and CentOS Stream9, AlmaLinux OS 9 compatible versions
An HTTP header injection vulnerability (CVE-2026-117477) was identified in KUSANAGI. Fixed versions have been released for KUSANAGI 9, and mitigation measures have been published for end-of-support versions KUSANAGI 7 and 8. See the official KUSANAGI security advisory for affected systems, remediation measures, and inquiries.
A vulnerability (CVE-2026-117477) involving HTTP header injection was identified in KUSANAGI. A patched version of KUSANAGI 9 has been released, and mitigation measures for the now-end-of-support KUSANAGI 7 and 8 have also been published. Detailed information on the scope of impact and remediation steps is provided in the Security Advisory on the official KUSANAGI website.
During the maintenance period, PHP can be updated using the PHP command, and outdated PHP that has reached EOL can be upgraded with the Migration command. KUSANAGI Enterprise Edition and Security Edition support zero‑downtime automatic updates, verification, and switching of PHP, and the Enterprise Edition also updates the OS and nginx in the same way. The Enterprise Edition can be trialed free for one month.
Unauthorized access by a third party occurred on the 'Onamae.com Desktop Cloud' service provided by GMO Internet Inc. This incident did not occur on the GMO Prime Strategy service, and at present there is no confirmation of unauthorized access to the company's services, leakage of customer information, or impact on service provision. Continued security measures and monitoring will be enforced, and if any related matters that should be communicated become apparent, they will be promptly notified.
GMO Prime Strategy conducted the second survey targeting 3,903 listed companies and 34,039 sites. About a month after a major WordPress security update, among the 5,831 sites whose update status was checked, 5.7% (332 sites) were found to be running a version older than the patched version. Sites that explicitly refused AI learning and data usage were 2.05%, and sites that provided reference information for AI were 3.80%.
GMO Prime Strategy Inc. will hold the "KUSANAGI Summit 2026" online on Thursday, December 10, 2026. The event will examine measures against the increasing web security risks caused by AI at each layer, and provide knowledge and solutions for website managers and engineers. Participation is free and requires pre-registration, with a capacity of 350 participants.
GMO Prime Strategy published an interview case study on the reasons for and effects of Diamond Chain Store Online adopting the KUSANAGI Managed Service. In response to unexplained speed degradation, internal technical talent shortages, and security concerns, the implementation led to a perceived speed increase of about twice, reduced the burden of incident response, and enabled focus on core operations.
GMO Prime Strategy and GMO AI Connect will begin offering the integration of the enterprise RAG software "GMO AI RAG" and "JOINT AI Flow by GMO" on October 19, 2026. By referencing internal documents such as employment rules and manuals from business workflows, decisions and processes based on their content can be automated. You can build workflows aligned with internal rules without individually developing an RAG foundation.
GMO Prime Strategy will begin offering the 'KUSANAGI Enterprise Edition by GMO' for enterprises starting October 15, 2026. It includes automatic OS and middleware updates, version upgrades without site downtime, malware protection, and support services, with a fee of about 50,000 yen per server per month (excluding tax). It is available for mid-sized and small to large enterprises, and a one-month free trial is also offered.
GMO Prime Strategy announced that it will continue developing technology to build and operate WordPress more securely and quickly in response to the intensification of AI-driven cyber attacks. The basic concepts of secure operation include OS, middleware, WordPress updates, code diagnostics, IP restrictions, WAF, tamper detection, and log monitoring.