[Editorial] PHP Incident: Government Sounds Alarm but Doesn't Know Whether Action Was Taken

Office of the Cyber Incident Response Division at the Ministry of Science and ICT, Government Complex Sejong. Yonhapburugburu

The PHP security flaw affecting a programming language widely used on websites around the world shows that, in a cyber crisis, the response after a swift alert is just as important—and just as challenging—as issuing the alert itself.

Lee Sang-jung, president of the Korea Internet & Security Agency (KISA), said during a parliamentary audit that the agency had not been able to determine which public institutions were using vulnerable versions or whether they had completed security patches. He also said KISA’s authority to inspect individual systems directly was limited. In other words, even after an alert is issued, it can be difficult to confirm what steps have been taken on the ground and devise additional measures.

Outdated websites run by small businesses are particularly difficult to secure. Online shopping malls often operate their websites using servers rented from outside providers. Even if a server management company completes security measures, the shopping mall itself may need to be modified separately if it was built with an outdated version of PHP. The website may not function properly in the process, potentially disrupting business operations. Simply advising small business owners who lack specialized staff to update their systems is not enough. The government should work with relevant companies to support inspections and software upgrades.

Interagency cooperation is essential to address these blind spots. The scope of oversight is broad, covering public institutions, financial companies, and businesses that handle personal information, so no single ministry can take responsibility for everything. The Ministry of Science and ICT and KISA should provide technical information, while the relevant ministries conduct inspections in their respective areas and share the results through a supporting system. The priority is to clarify authority and responsibility so that the existing response system led by the Office of National Security can fulfill its role.

The government should assess and address the institutional shortcomings exposed by this incident. The National Assembly should also examine the legal basis needed for inspections and information sharing, and secure funding to support the replacement of outdated systems. A systematic approach is also needed to track the software used at critical infrastructure facilities, starting with major facilities. The success of cybersecurity depends not on how quickly an alert is issued, but on whether systems exposed to risk are actually made secure and the results are verified.

This content was produced with the assistance of AI translation services.