Report on the System Failure Occurred on Saturday, August 23, 2025

We would like to provide the following report regarding the system failure that occurred in the afternoon of Saturday, August 23, 2025.

We sincerely apologize for the significant inconvenience this issue has caused to all parties concerned.

Overview of the Incident

From 6:16 p.m. on Saturday, August 23, 2025, candidates attempting to start tests on the HireRoo service—including coding format tests—were unable to begin their demos or examinations. This situation continued until the issue was resolved.

Duration of the Failure

• Start: Saturday, August 23, 2025, 6:16 p.m.

• End: Sunday, August 24, 2025, 9:12 a.m.

Cause of the Incident

The failure was due to memory pressure on the server.

Scope of Impact

This issue also affected tests that were already in progress for candidates. We have individually contacted the companies impacted by this incident.

We once again extend our deepest apologies for the great inconvenience and trouble caused to our customers.

Next Steps

We are committed to implementing preventative measures to avoid recurrence and to provide a more stable service going forward.

Thank you for your understanding.