Google is implementing updated spam policies to combat "back button hijacking," a deceptive practice that manipulates browser history and traps users on unwanted websites. Starting June 15, websites engaging in this practice will face penalties, including manual actions or drops in search rankings. Google has observed an increase in scripts that alter browser history, often through JavaScript, creating misleading entries that redirect users within the same site or to advertisements. Website owners have a two-month period to address these issues, as failure to do so could lead to significant traffic loss. Google's enforcement will begin after the deadline, with automated systems identifying and removing offending sites from search results.