DigiCert UltraDNS Sinkholed
VerdictMalicious
Severitymedium
Submitted and final observations · captured HTTP activity
Final browser state
URLQuery findings, Threat Detection Systems, and IDS alerts
Observed hosts are context, not independent maliciousness verdicts
| Host | Rank | Registered | First seen | Last seen | Sent | Received | IP | Fingerprints |
|---|---|---|---|---|---|---|---|---|
| u23.wcostream.com 3 alerts | N/A | 2019-10-20 | 2025-12-20 | 2025-12-20 | 2.4 KB | 960 B | Nginx Web servers, Reverse proxies Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. |