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ExpressVPN inches closer to a 100% secure server with TrustedServer initiative

Popular VPN provider ExpressVPN has introduced a new server platform called TrustedServer, one which runs on system memory (Random Access Memory) without the need to have local storage (hard disk drives or solid state drives).

Doing so means that as soon as a computer is shut down, all the information on the server vanishes and cannot - in theory - be recovered. The next time the server is rebooted, a fresh version of the stack (the operating system and the VPN infrastructure running above it) is spawned, like a brand new PC.

This is an inhouse technology developed by ExpressVPN, an industry first for the market, but one that has proved popular in enterprise where in-memory computing (IMC) helps businesses speed up transactions- SAP HANA relational database management system being perhaps the most well known example.

A new dawn in privacy for VPN

The software stack has been deployed on the entire server range (3000+) that ExpressVPN operates and comes from a single cryptographically signed read-only image, which eliminates any risk associated with misconfigurations or obsolete/unpatched software.

This approach, ExpressVPN explains, is different from traditional containerization on bare metal servers as there’s no host OS to speak off as the stack integrates the host OS and is loaded every time.

The TrustedServer initiative brings the concept of a 100% secure server closer but is still - technically - vulnerable to Spectre-type vulnerabilities when an attacker uses a running program to access the system memory. But the chances of this happening are infinitesimal and would first require a catastrophic chain-of-events to happen.

ExpressVPN has confirmed that it will be releasing more details about TrustedServer and we will amend this article with relevant updates in due course.

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Desire Athow

Managing Editor, TechRadar Pro

Désiré has been musing and writing about technology during a career spanning four decades. He dabbled in website building and web hosting when DHTML and frames were en vogue and started writing about the impact of technology on society just before the start of the Y2K hysteria at the turn of the last millennium. Then followed a weekly tech column in a local business magazine in Mauritius, a late night tech radio programme called Clicplus and a freelancing gig at the now-defunct, Theinquirer, with the legendary Mike Magee as mentor. Following an eight-year stint at where he discovered the joys of global techfests, Désiré now heads up TechRadar Pro. He has an affinity for anything hardware and staunchly refuses to stop writing reviews of obscure products or cover niche B2B software-as-a-service providers.