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Other Disclosures4398BroadBand Security,Inc.Information and Communications, Services and Others

Industry-first joint launch of a cybersecurity assessment business specializing in grid-scale battery storage facilities

BroadBand Security, SEGL ENERGY and アスリテラ have decided to jointly launch a cybersecurity assessment business for grid-scale battery storage facilities. Starting in September 2026, the three companies will sequentially provide services including assessments and monitoring for storage facility control systems and market-trading APIs.

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Announced details

Cybersecurity assessment business for grid-scale battery storage facilitiesSecurity assessmentVulnerability assessmentsPenetration testingSecurity MonitoringSecurity assessment report
Applicable field (uses covered by this announcement)

Grid-scale battery storage facilities, PCS, EMS, BMS, market-trading APIs, and the power and energy sectors

Launch dateServices scheduled to begin sequentially from September 2026
Relationship between the counterparty and the company
BroadBand Security,Inc.4398
Relationship with the Company

The three companies will jointly operate the business. SEGL ENERGY is the battery manufacturer, アスリテラ is SEGL ENERGY's exclusive general distributor in Japan, and BBSec will be responsible for cybersecurity assessments.

CounterpartySEGL ENERGY株式会社アスリテラ

SEGL ENERGY is an energy-related company established in Taiwan in 2014. It develops, manufactures and sells battery packs and energy storage systems. アスリテラ operates in the environmental and energy sectors, handling the planning, design and maintenance of portable power supplies, as well as serving as SEGL ENERGY's exclusive general distributor in Japan. SEGL ENERGY is based in Taiwan, while アスリテラ is based in Chiyoda-ku, Tokyo.

In this announcement the company addresses none of Contract Value / Offering price / Impact on Business Performance.

Source (materials cited by the company)

Based on research by the Company (as of August 2026)

Announced details
ItemDetails
Names of Products / Services CoveredCybersecurity assessment business for grid-scale battery storage facilities, Security assessment, Vulnerability assessments, Penetration testing, Security Monitoring, Security assessment report
CounterpartySEGL ENERGY, 株式会社アスリテラ
Counterparty overviewSEGL ENERGY is an energy-related company established in Taiwan in 2014. It develops, manufactures and sells battery packs and energy storage systems. アスリテラ operates in the environmental and energy sectors, handling the planning, design and maintenance of portable power supplies, as well as serving as SEGL ENERGY's exclusive general distributor in Japan. SEGL ENERGY is based in Taiwan, while アスリテラ is based in Chiyoda-ku, Tokyo.
Relationship with the CompanyThe three companies will jointly operate the business. SEGL ENERGY is the battery manufacturer, アスリテラ is SEGL ENERGY's exclusive general distributor in Japan, and BBSec will be responsible for cybersecurity assessments.
Launch dateServices scheduled to begin sequentially from September 2026
Applicable areaGrid-scale battery storage facilities, PCS, EMS, BMS, market-trading APIs, and the power and energy sectors
SourceBased on research by the Company (as of August 2026)
Items this document does not state (11)
Contract ValueOffering priceContract DateAward/certification nameAwarding / certifying bodyRegistration number and expiry dateLocationLocation scaleQuantitative EffectsUsage historyImpact on Business Performance

These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

Demand is increasing for specialized assessment and monitoring services for grid-scale battery storage facilities, driven by the spread of such facilities and expanding network connectivity, as well as changes in the regulatory environment, including the ERAB Guidelines and JC-STAR.

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Industry-first joint launch of a cybersecurity assessment business specializing in grid-scale battery storage facilities | BroadBand Security,Inc. (4398) timely disclosure | Komori