Secret, creators of an iOS App that allows users to share their thoughts and feelings anonymously, has raised $10m in funding led by Google Ventures.

Mobile security startup Optio Labs raises $10 million series A funding from company-builder parent Allied Minds and private investors, aiming to expand its Virginia Tech-originated technology across multiple platforms.

IDG Ventures India and private equity firm Ascent Capital have invested equity capital in India-based document software management company Newgen Software. The round is worth INR 1100m ($17.61m) Other corporate investors that have backed the business include HSBC Private Equity (Asia) and SAP Ventures.

Ranked by Deloitte as one of the fastest growing companies in the US Internet sector in both 2012 and 2013, PubMatic, an advertising platform company, has raised $13m in a deal led by Nokia Growth Partners (NGP). The latest investment brings the company's funding to date to $76m.