Tailscale

Tailscale is a Toronto-based cybersecurity company providing secure VPN and networking solutions built on the WireGuard protocol. The company has raised $275 million across multiple funding rounds, including a $12M Series A, $100M Series B, and a $160M Series C. Tailscale reached a valuation of $778 million following its Series B round and continues to scale with backing from Accel, Insight Partners, and CRV. Its funding supports product expansion, enterprise adoption, and the development of secure, zero-trust networking infrastructure.