“Move fast and break things” is a term we usually associate with Facebook (at least, until 2014) and the general startup ethos of being disruptive. Now in true entrepreneurial fashion, the phrase is finding itself as the center of — what else — a startup idea, which today is announcing a sizeable Series B as it gains traction.

Vouch, which offers business insurance specifically targeting startups, is today announcing a Series B of $45 million, led by Y Combinator’s Continuity Fund. The company was part of YC cohort that presented this past August, and between then and now it appears to have also raised a Series A of $24 million, with this Series B actually also closing back in September (I’m guessing the delay in timing was to coincide the news with the expansion of its service to California). PitchBook data indicates that Vouch’s valuation has also ramped up rapidly: it’s currently at $210 million. (Previous investors in the company include Ribbit Capital, SVB Financial Group, Y Combinator, Index Ventures, and 500 Startups, with the total raised to date now at $70 million.)

The company — not to be confused with the tutoring network Vouch, nor the ‘social network for loans’ Vouch — will be using the money that it will use to continue expanding its product and to bring the service to more geographies.

In addition to now launching in its newest region of California, today, it’s also live in Oregon, Utah, Colorado, Illinois, Indiana, Ohio, Wisconsin and Michigan. Today’s move is a key one, considering Silicon Valley is at the heart of the tech world, and therefore startups, and therefore fertile ground for acquiring new customers.

(It seems that although Vouch itself is based in San Francisco, it delayed a California launch in part to test out the product in smaller markets before hitting the big time: California, it notes, accounts for 50% of the whole business insurance market in the US, and California startups alone spend $44 billion annually on it.)

When Vouch launched at YC, founder Sam Hodges (who had been one of the original co-founders of Funding Circle, the business lending platform that went public in London) described the platform’s mission as a way of mitigating risks because sometimes “bad things happen to good startups.”

The company’s insurance covers all the tricky things that can befall young businesses in what is a very volatile market. (Common wisdom says that most fail, some have put the figure as high as 90%.)

That includes general liability (which includes damage to rented premises, personal or advertising injury, and related areas), business liability, management liability, fiduciary liability, cyber and crime coverage, rented and non-owned auto insurance and more. (Health or workers’ compensation are not included.) The products start at $200/year, which Vouch says undercuts most of what is already on the market. Munich Re backs the policies.

“Vouch helps founders manage the risks associated with starting up a new company, so they can focus on creating and growing businesses that change the world. We believe that’s a purpose worth pursuing,” said Hodges in a statement. “As an entrepreneur, I’ve spent most of my career building companies at the intersection of technology and financial services. I know first-hand that along the journey of building and growing a business, teams will face numerous high-stakes challenges. Vouch is here to support entrepreneurs and mitigate those challenges from the beginning, leaving more room for growth.”

Y Combinator has always had a soft spot for startups that built services for startups, and this is no exception. It makes perfect sense as a follow-on investment for Continuity, which has also backed Brex, Gusto, Instacart, LendUp, and Stripe. In this sense, it becomes a strategic investor, not unlike Silicon Valley Bank (which tells startups that do business with it that Vouch is its preferred insurance provider).

“Y Combinator and Vouch share a common goal – giving founders the support they need to build successful, innovative companies,” said Anu Hariharan, Partner at Y Combinator Continuity, in a statement. “Vouch is built specifically for startups, so founders have the peace of mind that their business is covered. This platform is fundamental to the startup community, as it enables founders to focus on growing their companies — which is why we were bullish on leading the Series B.”