My new site was penalized because an ethical action of unknown black hat and it was sandboxed by Google search Engine. Anyway, Sandbox is a Google punishment to those who spam links, practicing black hat applications or auto link insertion. This punishment will block your entire domain and extensions from appearing in Google Search Engine.
Sandbox duration usually take a month and last on or about 8th month and sandbox punishment will absolutely lost your Website, Keyword and Title in the entire Search Engine.
The only remedy to resolve Google Sandbox is to create a new domain and to transfer your website content to the new URL.
