User-generated content (UGC) is the lifeblood of online marketplaces and communities. When someone posts fraudulent, abusive, or spammy content on your site, it doesn’t just look bad: it’s a visible, public indication that your business isn’t safe. Content abuse hurts your brand and hits your bottom line.

Content moderators are often the first line of defense against fraud and abuse. But how can they keep up with the rapidly changing face of content abuse? What happens when fraudsters switch languages or invent codes? And what should content moderators do when they encounter gray areas? We sit down with Kevin Lee and Jeff Sakasegawa to find out. Drawing on their colorful experience at companies like Google, Square, and Facebook, Kevin and Jeff share tips, tricks, and insights.