Security & Compliance

When Regulations Stack Up

Your parent company just mandated ISO 27001 for all subsidiaries worldwide. Meanwhile, your Japan office handles My Number data for employee tax filings, falls under J-SOX because the parent is publicly listed, stores personal information subject to PIPA, and has physical security managed through SECOM. The auditor wants to see your ISMS documentation in Japanese, but your CISO in London wants everything in English. Where do you even start?

This is the reality for most foreign-affiliated companies operating in Japan. The security and compliance requirements don't arrive one at a time — they pile up, and they come from different directions with different expectations. eSolia helps you build a security program that handles all of them without treating each regulation as a separate project.

Information Security Management

Security Strategy and Architecture

A security program starts with knowing what you have and where the gaps are. We begin with a posture assessment — not a checkbox audit, but a realistic evaluation of how your organization handles access control, data protection, incident response, and the dozens of daily decisions that either strengthen or weaken your security. From that assessment, we build a prioritized roadmap that addresses the highest-risk gaps first, rather than trying to do everything simultaneously.

The architecture itself follows defense-in-depth principles: multiple layers of protection so that no single failure exposes the business.

In practice, this means network segmentation to limit lateral movement, endpoint detection and response (EDR) on every managed device, identity and access management tied to your directory service, data loss prevention policies that match how your people actually work, and cloud security posture management for any workloads running in AWS, Azure, or GCP. None of these layers works in isolation — the value is in how they connect. A SIEM that correlates events across your network, endpoints, and cloud services is far more useful than individual tools that each generate their own alerts.

For ongoing operations, we provide 24/7 monitoring, incident detection and response, threat analysis, and vulnerability management — either as a fully managed security operations service or as support alongside your existing team.

Cybersecurity Services

Security incidents happen. The question is how quickly you detect them and how well-practiced your response is. We help organizations build that muscle through SIEM deployment, intrusion detection, EDR, and either running a security operations center on your behalf or augmenting the SOC capability you already have.

Incident Response Process

Beyond incident response, we run regular vulnerability scanning and penetration testing to find weaknesses before attackers do, coordinate patching across your environment, and conduct security code reviews when you're deploying custom applications. On the human side, email remains the most common attack vector — especially business email compromise targeting Japanese employees who may be reluctant to question a request that appears to come from a superior. We deploy advanced email filtering, anti-phishing measures, DNS-based security, and run security awareness training designed for how social engineering plays out in Japan, not just translated from English templates.

Compliance and Regulatory

Japan-Specific Regulations

Japan's regulatory environment is distinct from what most multinational companies are used to, and the differences are more than cosmetic.

PIPA (the Personal Information Protection Act) is Japan's core privacy law, and while it's often compared to GDPR, the two diverge in important ways. PIPA requires consent for most personal data use, but the consent mechanism and exceptions differ — cross-border data transfers, for instance, have their own set of requirements that don't map neatly onto GDPR adequacy decisions. If your company shares employee data with headquarters in Europe or the U.S., you need a transfer framework that satisfies PIPA specifically, not just a GDPR-compliant privacy notice. We help with the full scope: data inventory, classification, privacy policy drafting in both languages, data subject rights handling, and the cross-border transfer analysis.

My Number is where Japan gets unusually strict. Every resident in Japan has a My Number (individual number) used for tax, social insurance, and disaster response — and the IT handling requirements are far more prescriptive than what most countries impose on their national ID numbers. You need documented procedures for who can access My Number data, mandatory access logs, defined storage and retention rules, and annual compliance reviews. If you outsource payroll or HR processing, your vendors must also meet these requirements, and you're responsible for verifying that they do. Many foreign companies underestimate this one until their first audit.

J-SOX (Japan's version of the Sarbanes-Oxley Act) applies to publicly listed companies and their subsidiaries, including foreign subsidiaries of companies listed on the Tokyo Stock Exchange. J-SOX puts more emphasis on IT general controls than U.S. SOX does — access control documentation, change management procedures, application controls testing — and the definition of "material weakness" is interpreted differently by Japanese auditors. If your parent company already runs a SOX program, the J-SOX requirements will feel familiar but not identical, and the audit expectations have local nuances.

Japan vs. International Regulations Comparison

International Standards

The ISO 27000 family is the standard most multinational companies aim for, and for good reason — ISO 27001 certification is recognized globally and satisfies many customer and partner security requirements at once. But getting certified in Japan means working with Japanese certification bodies (JCBs), producing documentation in Japanese, and aligning the ISMS with the specific risks your Japan operation faces, which are different from your London or New York office.

We support the full ISO 27001 lifecycle: gap analysis to see where you stand, ISMS design, risk assessment and treatment planning, policy and procedure documentation in both languages, internal audit programs, and preparation for the external certification audit. For companies running cloud workloads, ISO 27017 (cloud security) and ISO 27018 (cloud privacy) extend the base ISMS with controls specific to cloud environments — shared responsibility model implementation, cloud provider assessment, and data processing agreements. These extensions are increasingly expected by enterprise clients in Japan, especially in the financial and pharmaceutical sectors.

Industry-Specific Compliance

Certain industries face additional requirements beyond the general regulations. Financial services companies must satisfy FSA (Financial Services Agency) rules, PCI DSS for payment processing, and anti-money laundering controls — each with IT components that Japanese auditors will examine. Healthcare and pharmaceutical companies deal with medical device regulations, clinical trial data protection under MHLW guidance, and manufacturing IT controls that directly affect product quality. Manufacturing firms, particularly in automotive and electronics, face industrial control system security requirements, intellectual property protection obligations, and export control compliance that touches IT systems in non-obvious ways.

The common thread is that industry regulators in Japan conduct their own IT audits with their own expectations, and those expectations don't always align with what the global compliance team assumes.

Governance, Risk, and Compliance (GRC)

Governance and Policy

Security governance is the part that nobody finds exciting but everyone regrets skipping. Without clear ownership — who makes security decisions, who gets escalated to, who approves exceptions — policies exist on paper but not in practice. We help organizations establish governance committees, define roles and responsibilities, and build a policy framework that covers information security, acceptable use, data classification, incident response, and business continuity. The goal is documentation that people actually follow, not a shelf of binders that only gets opened during audits.

Training is part of governance, too. We run security awareness programs that go beyond annual slide decks — phishing simulations calibrated to the kinds of attacks that target Japanese offices, role-based training for people who handle sensitive data, and tracking to demonstrate compliance. Building a culture where employees feel comfortable reporting suspicious activity does more than any individual technical control.

Risk Management

Risk management in practice means knowing what assets you have, what threats they face, how likely each threat is, and what the impact would be. We conduct risk assessments that produce a scored, prioritized list of risks and a treatment plan — accept, mitigate, transfer, or avoid — that maps to your budget and timeline.

Third-party risk is a growing concern, especially in Japan where outsourcing relationships tend to be long-standing and the vendor may not be accustomed to security questionnaires or audit requests. We handle vendor security assessments, build security requirements into contracts, monitor ongoing vendor performance, and manage the data processor agreements that PIPA and GDPR require.

For business continuity and disaster recovery, we run business impact analyses, develop recovery strategies, test backup and restoration procedures, and conduct tabletop exercises. Japan's earthquake and typhoon exposure makes BCP more than a compliance checkbox — it's something companies here actually use.

Compliance Operations

When you're subject to multiple regulatory frameworks simultaneously, the operational challenge is tracking all the requirements, deadlines, evidence, and audit findings in a way that doesn't consume your entire team's bandwidth. We maintain compliance calendars, manage evidence collection, run gap analyses, and produce management reports that tell leadership where the organization stands without requiring them to read through audit findings themselves.

For audit management specifically, we develop internal audit programs, plan and execute internal audits, track remediation of findings, and coordinate with external auditors — a process that goes much more smoothly when someone on the team can work with Japanese auditors in Japanese.

Physical Security

Physical security in Japan involves a specific set of vendors and practices that differ from other markets. SECOM and ALSOK dominate the commercial security market, and most offices, data centers, and facilities use one of these providers for alarm monitoring, guard services, and emergency response. We handle the integration between these security systems and your IT environment — badge and card reader systems tied to HR for provisioning and deprovisioning, video surveillance with proper retention policies that meet PIPA requirements, multi-factor authentication for sensitive areas, and visitor management.

Building management in Japan also involves coordination with the local fire department for fire safety inspections and emergency planning — something building management companies handle but that your IT team may need to support if server rooms or network closets are involved. We bridge that gap, making sure the physical security program connects with IT security and that the documentation satisfies both local building requirements and your global security standards.

Why eSolia

We've spent More than 26 years working with Japanese regulations — PIPA, My Number handling, J-SOX compliance — and we know the local security vendor market. Our recommendations are vendor-agnostic; we don't take kickbacks. We've helped clients achieve ISO 27001 certification, pass J-SOX audits, and recover from security incidents, always with bilingual support so both your Tokyo team and global headquarters stay informed.

Get Started

Tell us about your compliance requirements and security concerns, and we'll outline what a realistic program looks like for your situation. Contact us.