You are relying on the proxy owner not to log your activity. While Unblock Ninja claims a "no logs" policy, most free mirrors are run by third parties who may sell your browsing data to advertisers.
: The service hides a user's real IP address from the destination website, providing a layer of basic online anonymity. Key Features of Ninja Proxy Services Unblock Ninja Proxy List
CroxyProxy – Free Web Proxy to Unblock Websites - JSM Central You are relying on the proxy owner not to log your activity
For the occasional need to bypass a trivial filter, the list is a handy swiss army knife. For security or privacy, it’s a liability. By learning how to evaluate, test, and rotate proxies from such a list, and knowing the exact moment to abandon it for a VPN or Tor, the user transforms from someone who merely visits a website to someone who intelligently navigates the complexities of the modern, filtered internet. That is the most useful essay of all—not a list, but the wisdom to use it. Key Features of Ninja Proxy Services CroxyProxy –