# Log4shell Canarytoken

# What is the Log4shell Canarytoken

This Canarytoken will alert if log4j logline is consumed by a vulnerable log4j library.

# Using a Log4shell Canarytoken

Create a Canarytoken by choosing the "Log4shell" tile.

Once you've created the Canarytoken, we'll provide you with a log4j snippet you can copy to test your systems for the log4shell issue. If the log line is consumed by a vulnerable log4j library, it will generate an alert on this Canarytoken. If this works, you will also obtain the hostname of the vulnerable server.