eugen leitl eugenleitlorg 10 aug 2002 gary lawrence murphy wrote uneducated guess need jump expensive whitelist walls would buckshot spamladen klez 5millionaddresses mailer finds one vulnerable host exchange server hopping addressbooks across degrees freedom world whitelists instantly breechable seem saying whitelists useless worms compromise system read address bookwhitelist sent compromising nonnegligible fraction systems go along mailing lists spamworm amplifiers dont think true individual users even today moreover worms use email vector exist single vendor ships mailers broken default settings insists make documents executables makes bad press eventually vendor going wise stop shipping many broken wares people switch secure alternatives whatever comes first httpxentcommailmanlistinfofork sun 11 aug 2002 122802 0200 cest forged whitelist spam