2\. Behind Japan’s Connected Corporate Networks, Rising AI-Assisted Cyberattacks Reveal How Technology Can Strengthen Business While Increasing Exposure

In modern business, a great deal of activity takes place without a visible footprint. Financial transactions move through digital networks, customer information is stored in databases, and employees coordinate work across offices and devices. These systems make companies more efficient, but they also create openings that criminals may attempt to exploit. As artificial intelligence becomes easier to use, the balance between convenience and security is receiving renewed attention.

A Reuters report published on October 9 described an increase in cyberattack activity affecting South Korea and Japan. In Japan, reported incidents rose by 18% month on month in September. Major companies mentioned among the targets included Daiwa Securities, SoftBank, and Lawson. Cybersecurity experts warned that AI tools were helping attackers automate tasks that once required more technical effort.

One concern is the speed with which malicious actors can search for weaknesses in digital systems. AI-assisted tools may help scan networks, organize information about potential vulnerabilities, or generate convincing phishing messages. These capabilities do not remove the need for criminal intent or technical knowledge, but they can make some stages of an attack easier to carry out at scale.

For businesses, the risk extends beyond the immediate cost of repairing a system. An incident can interrupt services, delay transactions, expose sensitive information, and undermine customer confidence. Companies may also need to spend time investigating what happened, notifying affected parties where required, and reviewing whether their security controls were adequate.

Japan's large and interconnected corporate sector faces particular coordination challenges. Financial institutions, retailers, telecommunications providers, suppliers, and logistics businesses increasingly depend on digital services that connect many organizations. A weakness in one part of this network can create risks elsewhere, especially when companies rely on external vendors or shared platforms.

Artificial intelligence, however, is not only a tool available to attackers. Businesses can also use AI-assisted systems to monitor unusual activity, sort security alerts, and help analysts identify potential threats. The effectiveness of these tools depends on the quality of the data, the way they are configured, and the ability of trained staff to assess their findings. Automation can support human judgement, but it cannot guarantee that every attack will be detected.

Companies therefore need a layered approach to cybersecurity. Regular software updates, strong authentication, access controls, employee training, backups, and rehearsed incident-response plans remain important. Businesses also need to understand the security practices of their suppliers, because digital exposure often extends beyond the boundaries of a single organization.

The financial implications may grow as threats become more sophisticated. Companies could face higher spending on security software, specialist staff, system upgrades, and independent testing. For smaller businesses, these costs may be particularly difficult to absorb. Yet the cost of prevention must be weighed against the potential expense of service interruptions, data loss, and damaged reputation.

The challenge for regulators and industry groups is to encourage stronger safeguards without preventing useful innovation. Clear reporting procedures, timely information-sharing, and realistic assessments of new AI-related risks can help organizations prepare. Companies will also need to review their defences as both business technology and criminal methods continue to change.

Japan's experience reflects a broader shift in the digital economy. The same technology that helps businesses write, analyse, communicate, and automate can also be adapted for harmful purposes. The long-term advantage will belong not simply to companies that adopt AI quickly, but to those that build the security and resilience needed to use it responsibly.

### AI Image Disclaimer

The AI-generated illustrations depict general cybersecurity and corporate technology environments. They do not represent actual cyberattack scenes, verified victims, or the internal systems of the companies mentioned.

### Sources

Reuters Japan National Police Agency CrowdStrike Daiwa Securities SoftBank Lawson