For those needing proxies for testing or light browsing, consider these more reputable options: Bright Data
If you choose to proceed with a public list, you should be aware of these specific vulnerabilities:
: Malicious operators can "pilfer" session cookies to hijack your accounts and impersonate you online.
Very High . Approximately 79% of free proxies do not support HTTPS, meaning your data is transmitted in plain text and can be read or modified by the proxy owner.
None . Most free proxy operators log your IP address and browsing activity to sell to third parties or for malicious use. Common Dangers of Free Proxy Lists
Extremely Low . Large lists like this often have a failure rate exceeding 90%. Many entries are "dead" (offline) or have been blacklisted by major websites like Google and Amazon.