coinbig[.]us

The domain coinbig.us is a confirmed phishing site engaged in brand impersonation targeting Ethereum users. It presents itself as a cryptocurrency exchange under the name 'Coinbig' with the page title 'Buy/Sell Bitcoin, Ether and Altcoins | Cryptocurrency Exchange | Coinbig', but operates as a scam to deceive victims into disclosing login credentials or transferring funds. No cryptocurrency drainer kit was identified. The site is currently taken offline.

Technical indicators show limited detection: 1 of 95 VirusTotal security vendors flagged coinbig.us, while Google Safe Browsing has not marked it as unsafe. The domain appears on 1 security blocklist (PhishDestroy) and was created on February 21, 2026. It resolves to the IP address 104.21.49.3, hosted on Cloudflare's network (AS13335) in the US. The SSL certificate is issued by WE1, and Gridinsoft assigned a trust score of 0/100. Registrar information is not available.

Users who interacted with coinbig.us should immediately change any passwords used on the site, enable two-factor authentication on legitimate cryptocurrency platforms, and monitor accounts for unauthorized transactions. If funds were transferred, report the incident to local law enforcement and the impersonated brand (Ethereum). Victims can also submit the domain to anti-phishing initiatives such as PhishTank or the Anti-Phishing Working Group to prevent further abuse.