Google and other major web companies faced the problem of "click fraud" where advertisers were charged for invalid clicks not intended to learn about products. This led Google to settle a lawsuit for $90 million. Click fraud occurred through manual clicks or automated "bots", hurting companies' revenues. Methods to detect click fraud included analyzing duplicate IP addresses, user sessions, and geo-targeting information. While click fraud posed losses for companies and profits for fraudsters, techniques like monitoring conversion rates helped combat the issue. Standards for defining fraudulent clicks and independent auditing were still needed.