atcoder.jp

The available scan results are strongly reassuring at the time of this scan. The domain was not flagged by any of 91 security engines, the malware scan reported 0 flagged files out of 101 checked, and the listed threat databases and blacklist sources did not report malicious or phishing-related listings. The domain also appears to have a long operating history of about 11 years and a measurable traffic presence, which can be consistent with an established online service.

The visible content also aligns with a legitimate programming contest website rather than a deceptive login page, fake giveaway, or malware delivery page. No suspicious external links or referenced domains were flagged in the provided scan data, and there are no signs here of brand impersonation or parked-domain behavior. Based on available scan data, no significant threats were detected at the time of this scan.