Take the tour ×  If I am using VPN service to protect my
identity, can my traffic be used to identify all my traffic?
For example, if I am accessing two services:    1. Some service
A, where I do not leave any identifying information.   2. My
personal E-Mail account.  Can someone find a relation between
(1) and (2), such that he will be able to tell that both are
accessed by the same person.  Naively I would think that it is
impossible and someone would at most be able to tell that I am
using VPN provider to access my E-Mails, without knowing about
(1).  But perhaps my computer, browser or something else leaves
some kind of signature in the data, which would enable someone
to find a relation?  share|improve this question It's difficult
to answer this question with 100% certainty... without knowing
additional details about the type of VPN. In the most common VPN
technologies, (ipsec+l2tp, pptp, openvpn, etc...) the default
behavior is that ALL traffic is routed through your VPN
gateway... meaning that ALL tra