Sift Science, a San Francisco-based online platform that monitors online fraud, has raised $4 million in Series A venture funding from Union Square Ventures and several individual investors. The company's platform monitors clients' website traffic for specific page navigation sequences, IP ranges, email address patterns and browser configurations to alert them in real-time of any fraudulent activity. This funding round brings Sift Science's total VC financing to $5.5 million, after a previous $1 million seed round.
