From November to December of last year, the cybersecurity firm F-Secure conducted a penetration test of the company's Windows client in an attempt to identify any potential security weaknesses within the app. More specifically, ExpressVPN wanted to know if an attacker could use its Windows app to execute code remotely while also ensuring that no user information was disclosed or IP addresses were leaked.
We're looking at how our readers use VPNs with different devices so we can improve our content and offer better advice. This survey shouldn't take more than 60 seconds of your time. Thank you for taking part.
In its security assessment of version 10 of ExpressVPN's Windows app, F-Secure reported that none of the targeted vulnerabilities were found. According to the report, it was not possible to gain information about the company's clients or out of network traffic from its app. At the same time, the app itself is not susceptible to Man-in-the-Middle (MitM) attacks, TLS downgrading, packet injection or other methods used to execute code remotely.
Of the security issues flagged by F-Secure, one was low-severity while the others were informational. No critical, high or medium issues were found and ExpressVPN has since fixed the issues raised in the firm's report. These fixes were also confirmed by F-Secure during a re-test which took place in February of this year.
More audits to come
In addition to letting companies know about potential security flaws in their software and services, VPN audits also make it easier for consumers when it comes to picking out the right VPN for their needs.
In the past, ExpressVPN has had audits conducted on its proprietary VPN protocol Lightway, its browser extensions, its build verification process and its in-house technology Trusted Server by both PwC Switzerland and Cure53.
Head of cybersecurity at ExpressVPN, Aaron Engel provided further insight in a blog post on the recent independent security audit from F-Secure as well as the company's plans for future audits, saying:
Are you a pro? Subscribe to our newsletter
Sign up to the TechRadar Pro newsletter to get all the top news, opinion, features and guidance your business needs to succeed!
After working with the TechRadar Pro team for the last several years, Anthony is now the security and networking editor at Tom’s Guide where he covers everything from data breaches and ransomware gangs to the best way to cover your whole home or business with Wi-Fi. When not writing, you can find him tinkering with PCs and game consoles, managing cables and upgrading his smart home.