Wickr, the maker of the eponymous privacy-focused messaging app, raised $9 million in Series A funding, according to a report by Re/Code.

Wickr touts the fact that its service doesn’t store user messages or have ways to decrypt the data being transmitted between users. This emphasis on privacy extends to the find-a-friend feature, which uses a representation of address books rather than actual contact information.

Nico Sell, Wickr’s CEO, said the company is delivering more than one million secure messages per day in more than 190 countries. Usage of the app, which is available on iOS and Android, is roughly doubling every two months.

The investment was led by the Alsop Louie investment fund with contributions from Juniper Networks and the Knight Foundation, an organisation focused on transformative ideas to drive quality journalism. Other investors include John Hering, CEO of mobile security provider Lookout.

Sell said the investors involved point to the future direction of Wickr. The company wants to partner with operators and could potentially be a tool for connecting journalists with whistleblowers.

The company plans to keep its core messaging service free, according to Sell, but will charge some users who want access to additional features such as calling and advanced text messaging tools.

Wickr is also open to licensing its technology to other companies to help their services run more securely.