9. Samantha Lewthwaite
So far, this list has featured many women who earned the nickname Black Widow. Samantha Lewthwaite went by a slightly different moniker: The White Widow. She is also considered to be one of the most notorious terrorists the Western world has ever seen.
As it turns out, this White Widow’s whole life revolves around death. Her husband was Germaine Lindsay, the man considered to be the mastermind behind the London bombings of 2005. She helped orchestrate the London attacks and several others and it is estimated that she is responsible for over 400 deaths. Moreover, it is also rumored that she has encouraged her children to follow in her blood-soaked footsteps.