Spam, modern-day junk mail, is unfortunately all too familiar to anyone with an email address. No longer limited to the marketing of questionable pharmaceuticals, spam is a medium for the spread of malicious software, and is widely used for fraud, like phishing and advance fee scams. Our work suggests that more convincing spam is in the offing, once spammers take full advantage of data they already have access to, and the scale at which spammers operate can put defenders at a disadvantage. We are examining these problems and looking at ways we can begin addressing them.