qfsbestsecure[.]site

The domain qfsbestsecure.site is a credential-phishing site that impersonates a cryptocurrency portfolio tracker under the false branding 'Quantum Security - Advanced Crypto Portfolio Tracking'. It does not mimic a specific legitimate brand or use a known drainer kit. As of the latest verification, qfsbestsecure.site has been taken offline, though it previously posed a direct risk of stealing user login credentials.

Technical indicators show qfsbestsecure.site had 0 of 95 VirusTotal vendors flagging it as malicious, and Google Safe Browsing did not list it as unsafe. However, it appeared on 4 security blocklists, including PhishDestroy, Polkadot, and Enkrypt. The domain was registered through Go Daddy, LLC on February 21, 2026, and resolved to the IP address 76.76.21.21, hosted on Amazon.com, Inc.'s infrastructure (AS16509). The SSL certificate was issued by Let's Encrypt (R12), and the site used technologies such as Vercel and HSTS. MX records pointed to mx2.privateemail.com and mx1.privateemail.com, while nameservers were ns37.domaincontrol.com and ns38.domaincontrol.com. Gridinsoft assigned it a trust score of 0/100.

Users who interacted with qfsbestsecure.site should immediately change any passwords entered on the site and enable two-factor authentication on all accounts. Monitor financial and cryptocurrency accounts for unauthorized activity. Report the domain to anti-phishing organizations such as PhishTank or the Anti-Phishing Working Group, and consider submitting it to Google Safe Browsing for broader protection. If credentials were reused across platforms, update passwords on those services as well.