Two Korean Players Caught Cheating in the DFOS S3 Grand Final: All Prize Money Revoked

Two Korean Players Cheated in the DFOS S3 Grand Final: All Prize Money Revoked

The Delta Force Korea Operations Team and the organizers of the Delta Force Open Series Season 3 (DFOS S3) confirmed that two Korean players, Yumin and Sana2, cheated during the grand final of the international event. The violation was stream sniping — watching an external live broadcast to gather information about opponents' positions, an advantage that is decisive in a tactical shooter.

According to the organizer's notice, DFOS S3 brought together 24 teams, with the finals held in Japan. The Korean team of Yumin and Sana2 finished as runners-up, while the host nation's Japanese team took the title. That runner-up result has now been stripped of its sporting value.

The sanction has two parts: a six-month competition ban running from October 1, 2026 to March 31, 2027, and the forfeiture of all prize money the Korean team earned from the qualifiers through to the final. The financial blow is severe given travel, practice and preparation costs across multiple stages.

The contrast with the Vietnamese PUBG case

The incident was quickly set beside the case of two Vietnamese PUBG players, Lã Phương Tiến Đạt (Himass) and Trần Tấn Vũ (TanVuu), who received permanent account locks from publisher KRAFTON after an integrity violation at PUBG Asia Star 2026 — an event presented as a friendly exchange between six Asian nations and regions: Vietnam, Thailand, China, Taiwan, Japan and Korea.

The contrast drove the debate: a friendly event produced a permanent account lock, while an international final produced a six-month competition ban. The two sanctions belong to different systems — KRAFTON locked game accounts, blocking access to the title, while the DFOS S3 organizer only limited eligibility in events it runs. The categories and the adjudicating bodies differ, so a direct comparison is not fully like-for-like.

Even so, two authorities applying very different severity levels to the same conduct shows the region's esports scene still lacks a shared integrity standard.

Community reaction

In Korea, many comments called it an 'own goal' and argued six months was too light, with some demanding six-year or permanent bans. Some expressed shame because the Korean scene had previously criticized the Vietnamese players.

In Vietnam, the esports community responded with the phrase 'quả báo' (karma) while noting that the DFOS S3 organizer had clear rules and acted decisively. Many asked whether KRAFTON would reconsider its harsher approach.

Lessons for a young esports scene

In tactical shooters and extraction shooters, positional and resource information is decisive, so stream sniping delivers an outsized edge. The case shows Delta Force events must tighten broadcast integrity: longer broadcast delays, information isolation for finalists, and clear player responsibilities.

For the Korean team, the damage is already complete: a tainted result, forfeited prize money and damaged reputations. For the industry, the case is a reminder that when publishers both write the rules and hold commercial stakes, fairness depends on a single, consistent sanction standard across tournaments and publishers.

Source: Delta Force Korea Operations Team announcement and DFOS S3 organizer (BTC) notice, published October 1, 2026.