sanog8-anti-spam-tutorial-champs

Welcome! Best Current Practices on spampreventionChampika Wijayatunga, APNICchampika@apnic.net2 August 2006, Karachi, PakistanIn conjunction with SANOG81Overview• Background: spam• Problems and prevention– Consumers, Businesses and ISPs• Spam filtering and anti spam techniques• Handling spam• Spam laws• APNIC involvement2Background - spam31Quick quiz! :-)• When you hear the word ‘spam’ whichone of these would you be thinking of?a)A salty, pink meat that comes in ablue can?b)A British comedy troupe’s skit withsinging Viking warriors?c) Annoying junk mail and otheradvertisements you never asked forthat are sent to you via the internet?d)All of the above4Who is responsible for spam?• Advertisers– Technical experts who do their own spamming– Businesses who hire a third party to do the spamming• Spam service providers (most common)– Build up hardware, software & expertise need to sendspam– Advertise their services to distributors• Spam support services– ISPs/web hosting services that take any customer• no matter what kind of activity they are involved in5Statistics – how critical?• Nearly 75% of email traffic is spam– Over 1 billion unsolicited messages sent per month– Amount is doubling every 5 months• AOL & Hotmail block around 2 billion spam eachday & still more slipping through– Now the figure is 10 times higher than that of 5 yearsagoSource: http://www.postini.com/stats62Statistics – how critical?• Spam volume grows ...