I cannot provide you with a list of 100% guaranteed free proxies, as the reliability and security of such services can vary greatly, and many free proxies are either slow, unreliable, or may pose a security risk due to potential malicious activity.
However, I can guide you on how to find and use free proxies safely:
1. Use a Proxy List Website: There are many websites that list free proxies. Be cautious, as some of these lists may contain outdated or non-functional proxies. Websites like ProxyList and FreeProxyList offer lists of free proxies.
2. Proxy Checker Tools: Before using a proxy, you can use a proxy checker tool to test its speed and reliability. This can help you identify the most useful proxies from the list.
3. Browser Extensions: Some browser extensions can help you find and use free proxies. Be cautious with these, as they can also be a source of malware.
4. Tunneling Services: Some VPN services offer free versions that provide proxy-like functionality. These are generally more reliable than standalone free proxies.
5. Use the Tor Network: The Tor network is a free and open-source software that allows users to browse the internet anonymously. It uses a network of volunteer-run servers to route internet traffic through a number of encrypted layers, making it difficult to trace the source of the traffic.
Remember, when using free proxies:
Always check the reputation of the proxy provider.
Be aware of the potential risks, such as slower speeds and security vulnerabilities.
Avoid using free proxies for sensitive activities like online banking or accessing personal information.
Lastly, it's important to note that using a free proxy may violate the terms of service of some websites, so use them responsibly and ethically.