Tokyo VPN Performance and Trust Metrics Over 52 Days

Featuring 3,075 speed measurements, 1,438 price records, and 15 trust evaluations for VPN providers, collected over a 52-day period from December 9, 2025, to January 30, 2026. It was created by Takeshi Hamaya using automated testing from Tokyo, Japan, and includes performance, pricing, and new trust score data.

Use Cases

• Analyze the performance-trust tradeoff by correlating download/upload speed metrics with privacy/security trust scores for 15 VPN providers.
• Conduct time-series forecasting on daily pricing data in multiple currencies to model VPN service cost fluctuations.
• Evaluate VPN provider reliability and stability metrics measured from Tokyo to assess network performance for users in Japan.
• Compare VPN providers based on specific trust score criteria such as no-log policy verification, third-party audit status, and legal jurisdiction.

Strengths

• Includes 3,075 speed measurements, 1,438 price records, and 15 trust evaluations, providing multi-faceted data points.
• Covers a 52-day measurement period from December 2025 to January 2026, offering recent temporal coverage.
• Trust scores are generated using a structured 11-criteria evaluation, including no-log policy, audits, and jurisdiction.
• Data is collected via automated testing from a single location (Tokyo), ensuring consistent measurement methodology.

Limitations

• All measurements are performed from Tokyo, Japan, limiting geographic generalizability for VPN performance elsewhere.
• Trust scores are generated via an API (Claude) with structured prompts, which may introduce model-based evaluation biases.
• The dataset focuses on 15 VPN providers, which may not represent the entire market.

Provenance

Source

Harvard Dataverse, authored by Takeshi Hamaya.

Collection Method

Automated testing using Google Apps Script; trust scores generated using Claude API with structured evaluation prompts.

Time Range

December 9, 2025, to January 30, 2026.

Freshness

Data was last updated on February 2, 2026, and covers a period ending January 30, 2026.

Geography

Tokyo, Japan.