Broadband Security Enhances Cyber Attack Monitoring, Detection, and Response Services in Response to Financial Services Agency and Bank of Japan Request Regarding Frontier AI Threats

Broadband Security Co., Ltd. (BBSec) (Headquarters: Shinjuku-ku, Tokyo; President and CEO: Takashi Takizawa), a provider of specialized security services including information leakage prevention and IT countermeasures, announces the enhancement of its G-MDR® service offering—the second phase following the June 5, 2026 announcement of "Short-Term Support Services for Financial Institutions Considering Evolving Threats from Frontier AI." This enhancement strengthens the provision of monitoring, detection, response (containment), and incident management services tailored for financial institutions and similar organizations.

G-MDR leverages AI-integrated XDR capabilities to deliver monitoring, detection, and response (containment) on the assumption of intrusion, contributing to rapid initial response and improved resilience before damage spreads.

Additionally, to prevent situations where financial institutions cannot afford adequate initial response due to cost constraints, G-MDR includes a bundled cyber insurance policy with a payout limit of 10 million JPY.

[Background for Service Enhancement]

The rapid advancement of AI technologies, including generative AI, has led to increasingly sophisticated and faster cyberattacks. In particular, frontier AI raises concerns over its potential misuse for discovering vulnerabilities and enhancing attack methods.

In light of this, the Financial Services Agency (FSA) and the Bank of Japan have called on financial institutions to urgently review and strengthen their security posture under executive oversight, particularly in asset management, vulnerability management, patching, continuous monitoring, detection, response, and resilience assurance.

While financial institutions are expected to rigorously implement fundamental measures such as patching, risks such as zero-day attacks, misconfigurations, credential misuse, and supply chain intrusions cannot be fully mitigated by patching alone. Therefore, establishing a robust monitoring, detection, and response (containment) system capable of identifying post-breach indicators early and containing incidents before damage spreads is essential.

[Monitoring, Detection, and Response (Containment) with G-MDR]

1. AI and Expert SOC to Identify Critical Threats

For financial institutions, effective security operations require not simply generating more alerts, but accurately identifying which threats require immediate attention. G-MDR combines AI-powered correlation analysis with expert judgment from BBSec professionals to enable effective monitoring, analysis, and rapid initial response.

2. Cross-Platform Monitoring Independent of Specific Vendors

The scope of monitoring for financial institutions continues to expand across cloud, SaaS, identity, endpoints, networks, and logs. Based on the Open XDR philosophy—avoiding dependence on any single vendor—G-MDR conducts cross-platform analysis of multiple compatible security data sources to detect post-intrusion indicators early and enable containment before damage escalates.

3. Business Continuity Preparedness with Bundled Cyber Insurance

G-MDR includes a bundled cyber insurance policy with a payout limit of 10 million JPY, providing complementary protection on both technical and business continuity fronts.

[Comprehensive Support by BBSec]

In its comprehensive support service package announced on June 5, 2026, BBSec combines vulnerability assessments, attack surface surveys, security monitoring, CSIRT setup and operational support, incident response, and FSA guideline compliance support to assist financial institutions with both short-term actions and long-term security posture enhancement.

The enhanced G-MDR service is a core offering within this package, focusing on "monitoring response and multi-layered defense." By integrating risk visualization through vulnerability assessments and ASM (Attack Surface Management) with G-MDR’s monitoring, detection, and response capabilities, BBSec provides end-to-end coverage from prevention to early detection, containment, and recovery.

[Bundled Cyber Insurance]

The cyber insurance bundled with G-MDR is the "Cyber Protector – Product-Linked Contract Type (Product-Linked Cyber)," underwritten by Mitsui Sumitomo Insurance Company, Limited. The insurance provides a per-incident payout limit of 10 million JPY. * Coverage, eligibility, and scope of the cyber insurance vary according to the terms of the insurance contract.

[Future Outlook]

In the era of frontier AI, where vulnerability discovery and attack speeds are accelerating, a comprehensive strategy is essential. This includes traditional patch-based defenses, combined with intrusion-assumption monitoring, detection, and response, enhanced resilience, and business continuity preparedness.

BBSec will continue to combine its deep security expertise and broad service portfolio to help financial and other client organizations respond swiftly and effectively to the evolving cyber threats of the AI era.

* G-MDR® is a registered trademark of Broadband Security Co., Ltd.

[About BBSec]

Founded in 2000, BBSec is a total security service provider offering a full range of services—from visibility and diagnostics to incident response and 24/7 operational support. Leveraging high technical expertise, extensive experience, and broad intelligence-gathering capabilities, BBSec views "supply chain attacks," "attacks targeting critical infrastructure," and "security in the AI era" as key societal challenges. By protecting a growing number of customers from malicious actors, BBSec aims to realize its vision of "creating a convenient and secure network society."