subjack
Subdomain Takeover tool
Platforms: Linux · Last verified September 6, 2026
This package contains a Subdomain Takeover tool written in Go designed to scan a list of subdomains concurrently and identify ones that are able to be hijacked. With Go’s speed and efficiency, this tool really stands out when it comes to mass-testing. Always double check the results manually to rule out false positives.
Only use this tool against systems you own or are explicitly authorized to test — see the disclaimer.
Getting started
See the official Kali tool page and upstream homepage linked above for installation and usage details.