Our VPN Experts

Simon is best known for his VPN investigations and other research into online censorship and privacy issues. His most notable studies include:

• The Global Cost of Internet Shutdowns in 2019, which found that this form of censorship cost the world economy over $8BN last year.
• Global Mobile VPN Report 2019: a world-first study of mobile VPN download growth across 70+ countries with year-over-year data back to 2016
• VPN Ownership Investigation, which found nearly 60% of the most popular free VPN apps had hidden Chinese ownership
• Free VPN Risk Index (Android Apps): Simon tested 150 free VPN apps and found 25% suffered DNS and other leaks, while 85% were potentially unsafe
• Collateral Damage in the War Against Online Harms: co-authored with Open Rights Group, this investigation into overblocking of websites by UK ISPs revealed over 400 charity, school and social supports sites had been blocked in error

With 25 years of software engineering and networking experience, JP oversees all technical aspects of our VPN testing process to ensure we review VPN software to the highest standard.

JP developed our global, automated VPN speed testing framework and designing our advanced IP and DNS leak testing methodology.

Callum leads the Top10VPN.com editorial team, overseeing all VPN reviews, advice and news.

He’s an experienced technology journalist and former product testing expert at Which?. Callum is a passionate digital privacy advocate, and is a member of the IAPP and the EC Council’s Knowledge Review Committee.

Samuel leads our research on censorship, surveillance and disinformation to help defend digital rights around the world. 

He has written for numerous leading publications, including CNN, Al Jazeera and Deutsche Welle, and is passionate about promoting empowering and secure digital spaces for all.