I have recently downloaded OWASP ZAP to perform security testing. But there is no option for plug and hack feature so that I can incorporate it with Firefox? Can anyone tell me why is it not there and how can I add it?
ZAP version 2.6.0 Ubuntu 16.04
It may be because mozilla firefox has restricted plug and hack feature in new versions for security concerns.
If you still wish to do so, try using older firefox versions.
