ExpressVPN has improved its VPN in multiple ways. To start, ExpressVPN’s unique Lightway protocol has been rewritten using the Rust programming language.

As a programming language, Rust offers protection against key vulnerabilities while maintaining performance on par with C and C++. It also has strict rules around data access and provides memory safety by eliminating common bugs.

“Rust offers far greater security for VPN protocols than C, enabling us to eliminate whole avenues of attack vectors and weaknesses,” ExpressVPN said in a blog post. “The biggest threats in C simply cannot exist in Rust, thanks to Rust’s memory safety: bugs and attack vectors related to memory access become immediately invalidated.”

ExpressVPN immediately had two security audits confirm that the new Rust conversion was safe. Praetorian and Cure53 both reviewed the new protocol change in September and October respectively. Both companies reported that ExpressVPN passed their audits.

“Ultimately, it can be argued that the ExpressVPN Lightway protocol and its implementation in Rust are already in a good state of security,” Cure53 said.

Alongside the conversion to Rust, ExpressVPN released a new version of Aircove, the operating system behind the company’s line of Aircove routers. Specifically, they optimized its VPN speed and added a guest Wi-Fi mode.

The optimization allows AircoveOS v5 to reach speeds of up to 330 Mbps while using the Lightway protocol, or more than double what AircoveOS v4 offered. ExpressVPN compares these speeds to the old Netgear R7000 routers, claiming that it’s more than seven times faster.

“Improved speeds mean less buffering while streaming, faster downloads, and smoother video calls — all while secured by best-in-class encryption,” ExpressVPN said.

Alongside Aircove v5, ExpressVPN released its new guest Wi-Fi mode. This creates a new Wi-Fi option that you can share with guests. The guest network prevents the user’s devices from connecting with other devices on your network, making it harder for unwanted guests to hack your network.