opensea[.]si

The domain opensea.si is identified as a brand-impersonation threat specifically targeting OpenSea, a well-known non-fungible token (NFT) marketplace. This domain was operational under the guise of legitimacy, presenting itself as an affiliated or official platform with the page title 'YC Open Sea.' Current infrastructure analysis confirms the domain is offline, though prior activity suggests malicious intent to deceive users into engaging with fraudulent transactions or credential harvesting mechanisms. Infrastructure analysis reveals multiple technical indicators supporting the elevated risk assessment. The domain was registered through Editor d.o.o. on April 04, 2012, though its malicious use appears to be more recent. It resolved to the IP address 212.44.120.77 and was flagged by 3 of 95 security vendors on VirusTotal. Additionally, the domain appears on 2 security blocklists and is referenced in 5 threat intelligence pulses on AlienVault OTX. The Gridinsoft trust score for this domain is 0 out of 100, further corroborating its fraudulent nature. The SSL certificate was issued directly to opensea.si, which may have been an attempt to lend an air of authenticity to the impersonation scheme. At present, opensea.si has been taken offline, likely due to enforcement actions or domain suspension. However, the historical threat indicators remain relevant for security teams and users. It is recommended that organizations update their blocklists to include this domain and monitor for any re-emergence under similar naming conventions or infrastructure. Users who may have interacted with this domain should verify their accounts for unauthorized activity and reset credentials as a precaution. Security teams are advised to review logs for connections to 212.44.120.77 and correlate with other known indicators of compromise associated with this campaign.