: These services typically rely on aggressive pop-ups, "clickjacking," and redirects to gambling or scam sites to generate revenue. Recommended Alternatives
: Many of these "proxies" act as Man-in-the-Middle (MitM) attacks. If you log into any account while using an unverified proxy, the provider can capture your username and password.
The phrase is typically associated with search queries used to find ways to bypass internet filters or access restricted adult content via proxy servers or specific DNS settings (like "1.1.1.1" or "8.8.8.8," which may be what the "12345" part of the query is misremembering).