Hubspot, a maker of online marketing tools, has secured $12 million in a second round led by Matrix Partners. Previous backer General Catalyst also participated in the latest round. The Cambridge, Mass.-based company, which was formed in 2005, raised a $5 million first round last July and received $500,000 in a seed round two years ago. Hubspot plans to use the new proceeds to build up its sales and product development staff. The company’s products range from search engine optimization, lead gen, analytics services. Release