Today, as we mark the International Day of the Girl, we celebrate girls in the digital generation. They are harnessing the power of new technologies to carve out a better future for all. Yet as we do so, we must also call urgent attention to those left behind by gender discrimination that systematically limits girls, now and across their lifetimes. These inequalities extend to the Internet, which girls still use less than boys – up to four times less in some countries. This digital divide compounds longstanding gender disparities.