Not to be confused with a dog-walking startup, Bark is a watchdog for kids’ and teens’ internet security. Today it announces a $9 million Series A led by Signal Peak Ventures, with participation from Two Sigma Ventures, Symmetrical Ventures, Fuel Capital, Hallett Capital and Atlanta Seed Company.

The round comes as the company, which uses AI to track kids’ online activity and notifies parents when its algorithm finds concerning content, passes an impressive landmark. To date, Bark’s algorithm has analyzed more than 1 billion messages across text, email and social media platforms like Facebook, Instagram, Pinterest, Snap and GroupMe.