Unit21, a startup that helps businesses monitor fraudulent activities with its no-code software, announced today it has raised $34 million in a Series B round of funding led by Tiger Global Management. The round values San Francisco-based Unit21 at $300 million and comes nine months after the startup raised a $13 million Series A that included investments from the founders of Plaid, Chime and Shape Security as well as former Venmo COO Michael Vaughan. ICONIQ Capital and existing backers Gradient Ventures (Google’s AI venture fund), A.Capital and South Park Commons…