Citizen Lab article,<p><i>Vulnerabilities in VPNs</i> - <a href="https://citizenlab.ca/2024/07/vulnerabilities-in-vpns-paper-presented-at-the-privacy-enhancing-technologies-symposium-2024/" rel="nofollow">https://citizenlab.ca/2024/07/vulnerabilities-in-vpns-paper-...</a>