base-extension-io-start[.]pages[.]dev

The domain base-extension-io-start.pages.dev is a confirmed phishing site engaged in brand impersonation targeting Base, a cryptocurrency platform. It poses a high-risk threat by mimicking legitimate Base services to deceive users into disclosing sensitive information or credentials. No crypto drainer kit was detected, but the site was actively flagged for social engineering before being taken offline.

Technical indicators confirm the malicious nature of base-extension-io-start.pages.dev. The domain was flagged by 12 of 95 security vendors on VirusTotal, including ChainPatrol, alphaMountain.ai, and BitDefender. Google Safe Browsing classified it as 'SOCIAL_ENGINEERING,' and it appeared on one security blocklist (PhishDestroy). Registered through Cloudflare, Inc. on November 08, 2025, the domain resolved to IP address 172.66.45.10, hosted by Cloudflare in the US (AS13335). The SSL certificate was issued by Google Trust Services (WE1), and the observed page title was 'Suspected phishing site | Cloudflare.' Technologies detected included HSTS, Cloudflare, and HTTP/3, with an HTTP status of 403 at the time of assessment.

Users who interacted with base-extension-io-start.pages.dev should immediately change any exposed credentials, enable two-factor authentication (2FA) on all accounts, and monitor for unauthorized transactions or fraudulent activity. If cryptocurrency wallets were connected, revoke any token approvals and transfer funds to a new wallet. Report the domain to relevant platforms, including Google Safe Browsing, Cloudflare’s abuse team, and local cybersecurity authorities to aid in takedown efforts.