Cost-based anti-spam systems

#	Item
11	“Proof-of-Work” Proves Not to Work Ben Laurie1 and Richard Clayton2 1 Add to Reading List Source URL: www.hashcash.org Language: English - Date: 2005-01-15 19:23:57 Email Spam filtering Computer-mediated communication Email spam Anti-spam techniques Hashcash Spam Cost-based anti-spam systems Email authentication Spamming Internet Computing
12	PDF Document Add to Reading List Source URL: weis2006.econinfosec.org Language: English - Date: 2006-07-20 16:57:23 Spam filtering Email Computer-mediated communication Anti-spam techniques Email spam Spam Hashcash Whitelist Cost-based anti-spam systems Spamming Internet Computing