Is it safe to use free proxy server?

Related questions

1. Why do we use reverse proxy?
2. Can proxy server be traced?
3. Are proxies dangerous?
4. Is proxy safe?
5. Do I need a proxy with VPN?
6. What is a proxy server security certificate?
7. What is the purpose of reverse proxy?
8. What are the differences between https SSL and TLS?
9. Should I use a proxy server?
10. What is RPC server?

Tags

1. #servers
2. #stable
3. #encrypting
4. #internet
5. #without
6. #proxies
7. #proxy
8. #safer
9. #forwards
10. #since
11. #personal
12. #always
13. #popular
14. #essentially
15. #claim
16. #traffic
17. #faster