clwit.co.jp

What It Is

株式会社クルウィット（CLWIT） is based in Tokyo, Japan and was founded in 2000. Its business is built around two main pillars: “cybersecurity” and “internet services.” According to its official website, its cybersecurity work includes advanced R&D, commissioned development related to cybersecurity and business efficiency, and consulting services based on its accumulated R&D experience. Historical products include SiteVisor, a cyberattack alerting service; SiteVisor DMZ, designed to visualize internal malware infections; SiteVisor Ultimate, for visualizing APT attacks; and kr:ns, an IP reputation service released in 2022.

Core Capabilities and Analysis

In terms of protection focus, the company appears to emphasize cyberattack visualization, alerting, IP reputation, and traceability analysis rather than traditional endpoint antivirus or perimeter firewall products. It previously sold PAFFI, a packet reverse-tracing system, and holds patents related to “packet path tracing systems,” suggesting its technical foundation is concentrated in network traffic, attack-source tracing, and security monitoring. Details such as deployment model, interface integrations, alerting policies, and management console capabilities are not disclosed in the main materials, so it is not possible to determine whether it supports cloud SaaS, on-premises deployment, APIs, SIEM, or SOAR integrations. On the compliance side, the only clearly stated items are Japan telecommunications business registration A-14-5386 and patent information; certifications such as ISO 27001 were not found.

Pricing and Support

The official website does not provide pricing models, plans, trials, SLAs, or payment methods. Given its positioning around “commissioned development” and “consulting,” actual procurement will likely require project-based discussion and quotation. The company has 6 employees. Although its publicly listed customers include organizations and enterprises such as NICT, JST, The University of Tokyo, KDDI, and NTT, its service capacity under concurrent demand, overseas support capability, and response levels should still be confirmed separately.

Pros and Cons

Its strengths are its long operating history, Japanese domestic cybersecurity R&D background, telecommunications license, patents, and multiple collaboration records with research institutions and large enterprises. Its business model is also flexible, covering R&D, custom development, consulting, and security alerting services. The main drawback is that publicly available materials read more like a company profile and lack key procurement information such as product white papers, deployment architecture, pricing, interfaces, detection performance, false-positive rates, and compliance certifications, resulting in limited transparency.

Who It’s For and Access from China

It is better suited to organizations with operations in Japan that need cyberattack alerting, APT visualization, IP reputation capabilities, or custom cybersecurity R&D. It may also be suitable for universities, research institutions, or enterprises seeking dedicated security research collaboration. The main materials do not state access conditions from China, and payment options or Chinese-language support are also unknown. If Chinese companies need similar capabilities, they can also evaluate local vendors such as QiAnXin, Venustech, NSFOCUS, DBAPPSecurity, and Sangfor to obtain more predictable support in network connectivity, compliance, invoicing, and local service.