Where can the full independent audit reports (not summaries) for NordVPN, Proton VPN, ExpressVPN, and Surfshark be downloaded and how recent are they?
Executive summary
All four major VPN providers have undergone independent no-logs and infrastructure audits in recent years and have published audit findings, but the ease of downloading full, independent audit reports differs: Proton VPN and Surfshark have publicly released full reports in 2025 and make them available via their announcements or transparency pages (Proton’s August 2025 audit and Surfshark’s June 2025 Deloitte report) [1] [2], ExpressVPN has a long track record of publishing many audit reports including recent privacy attestations and claims to have completed dozens of audits (reported as 19–23 overall in coverage) [3] [4], while NordVPN’s most recent large-scale Deloitte/Cure53 assessments were concluded at the end of 2025 but the company has publicly defended restricting broad access to some audit materials for security reasons [5] [6] [7].
1. NordVPN — audited often, full reports not always freely downloadable
NordVPN has repeatedly commissioned high-profile third-party reviews (Deloitte, PwC, Cure53 among others) and completed an infrastructure and no-logs assessment around late 2025 under Deloitte’s ISAE frameworks, with outlets reporting no critical vulnerabilities found [8] [5] [6]; however, reporting indicates NordVPN sometimes limits direct public access to the raw audit documents and cites security reasons for tighter distribution rather than posting every full report for anyone to download [7]. The practical consequence is that while press coverage and vendor statements confirm full independent audits exist and were completed in 2025, available sources do not establish a single public URL where the complete Deloitte or Cure53 PDFs are openly posted for anonymous download [5] [6] [7].
2. Proton VPN — public, recent full no‑logs audits (August 2025) and SOC 2 attestation
Proton VPN announced a fourth consecutive independent no-logs audit conducted by Securitum in August 2025 and a related SOC 2 Type II audit in July 2025; reporting explicitly notes that Proton released the results of that independent audit, and the coverage frames Proton as placing audit results on its transparency or announcement channels [1] [4]. That means the full independent report for Proton’s August 2025 no-logs audit should be obtainable via Proton’s published audit/press/transparency pages as described in public reporting [1].
3. ExpressVPN — many audits published over time; recent audit history well-documented
ExpressVPN has a long history of third-party verification and has publicly completed dozens of privacy/security audits (coverage cites 19 up to 23 audits overall), with specific firms like KPMG, Cure53 and others engaged across years and multiple report releases noted in reporting [3] [4]. The implication from the sources is that ExpressVPN’s audit reports have been historically published on the company’s transparency and audit web pages and that recent privacy attestations are available via ExpressVPN’s public channels, though individual article snippets do not quote a single latest-audit date in 2025–2026 [3] [4].
4. Surfshark — Deloitte no‑logs assurance report released in June 2025
Surfshark underwent a second Deloitte no-logs assurance review and publicly released the results, with TechRadar explicitly reporting the Deloitte report’s publication in June 2025 [2]. Coverage also references Surfshark’s continued improvements and a 2025 no-logs audit noted in industry summaries [9]. Therefore, the full Deloitte report for Surfshark’s 2025 assurance engagement is reported as released and should be available via Surfshark’s published transparency or press materials [2].
5. Practical takeaway and verification caveats
For Proton VPN and Surfshark, independent reporting confirms full 2025 audit reports were released and publicly posted in company channels [1] [2]; for ExpressVPN, multiple publicly posted audit reports exist and the provider has an extensive published audit history though the most recent single-report date requires checking ExpressVPN’s transparency/audit page for the latest PDF [3] [4]; for NordVPN, reputable reporting documents a December 2025 Deloitte/Cure53 examination but also notes NordVPN’s policy of restricting broad public access to some audit documents for security reasons, meaning prospective readers may need to request the full report through NordVPN’s transparency process rather than simply downloading it anonymously [5] [6] [7]. If a specific PDF download link or the exact filename is required, the primary source to consult is each provider’s official transparency/audit or blog page as referenced in the coverage above, because the publicly available reporting identifies existence, auditor names, and dates but does not provide direct file URLs in every case [1] [2] [3] [5].