Japan will set up a dedicated team to simulate artificial-intelligence cyberattacks after flaws in the PHP programming language forced corporate shutdowns across Tokyo.
The disruption hit core consumer services across banking, aviation, rail and telecommunications on Friday as engineers scrambled to patch the open-source code underpinning major commercial platforms.
SoftBank suspended its mobile emergency alert system while it conducted system maintenance to fix the vulnerability. The outage meant mobile subscribers could not receive early warnings for earthquakes, tsunami alerts, or evacuation directives across the carrier’s network.
East Japan Railway cut access to several internet services before restoring a portion of group operations on Friday. Carrier ANA, brokerage Nomura and lender Mitsubishi UFJ Financial Group also took web portals and service channels offline as emergency containment measures took effect.
Public administration tools suffered parallel shutdowns. The Ministry of Finance, the National Tax Agency, and the Meteorological Agency all halted selected online public services while technicians tested internal systems against external exploit traffic.
Commercial operators in Japan maintain deep digital records that automated attack scripts can now probe without traditional Japanese-language friction. AI automation allows attackers to scan corporate stacks, draft tailored phishing attacks, and find exposed interfaces without human translation hurdles.
Nippon Paint applied a security patch and restored its corporate web presence after pulling systems off the public internet. Most consumer-facing networks face immediate exposure because legacy internal infrastructure across Japan relies heavily on long-standing PHP deployments rather than modern isolated microservices.
Trend Micro chief executive Eva Chen noted that companies in the market have relied on language barriers and perceived infrastructure stability that no longer protect corporate networks from rapid automated scanning.
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