Stop the bots

Botnets are a major source of evil on the Internet, from spam, phishing attacks, virus propagation and denial-of-service attacks to the stealing of financial information and other illegal activity. Does disbanding them raise legal and ethical implications?  
Botnets are a major source of evil on the Internet, from spam, phishing attacks, virus propagation and denial-of-service attacks to the stealing of financial information and other illegal activity. Does disbanding them raise legal and ethical implications?