# IPA alerts to summer holiday security risks

Published: 2025-07-25 · Severity: routine · Sectors: government-national, infrastructure
Canonical: https://vorant.io/reports/08a3a67c-a555-5b25-8750-99e09abd4e4b/ipa-alerts-to-summer-holiday-security-risks

> Japan's IPA warns of network-penetration attacks during extended holidays when system admins are absent.

Japan's Information-technology Promotion Agency (IPA) has issued seasonal security guidance timed to the summer holiday period, when many organizations experience reduced staffing and system administration capacity. The alert focuses on network-penetration attacks targeting internet-connected devices and systems, a threat category IPA has tracked since August 2023.

The advisory warns that attackers exploit vulnerabilities in internet-exposed infrastructure to achieve data theft, system compromise, ransomware infection, and conversion of compromised systems into Operational Relay Boxes (ORBs)—nodes that unwittingly relay attacks against third parties. Organizations unknowingly become vectors for downstream attacks when systems are turned into relay infrastructure. IPA recommends organizations conduct inventory of internet-connected devices using Attack Surface Management (ASM) principles, maintain vulnerability patching discipline, implement continuous log monitoring, and establish business continuity and crisis management plans that account for cyber incidents alongside other disruptions.

The advisory is part of IPA's ongoing awareness program and directs organizations to report suspicious communications or indicators of compromise to IPA's incident reporting channels to support situational awareness activities. The guidance applies to individual users, enterprise employees, and system administrators, with tailored recommendations for each audience.

Source reporting: https://www.ipa.go.jp/security/anshin/heads-up/alert20250801.html

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