Anti-spam activist Scott Hazen Mueller of spam.abuse.net does not advocate such guerrilla tactics, cautioning, "I wouldn't count on spammers staying within the bounds of civilized behavior in their responses to such retaliation." Indeed, even if aggressive action doesn't lead to war, beware the law of unintended consequences. One vigilante programmed her fax machine to dial a spammer's number repeatedly in an attempt to gum up the offender's phone line. She let this program run for a month. Unfortunately for her, the number turned out to be in Uzbekistan. Thousands of dollars of phone charges later, revenge was not so sweet.