A federal judge has ruled that Google has engaged in abusive monopolistic practices by exploiting its online marketing technology to boost profits, leading to a $1.8 trillion internet empire. This decision follows a previous ruling that Google's search engine dominance stifled competition. The Justice Department targeted Google's digital advertising network in an attempt to curb its power. Google plans to appeal the ruling, arguing that its ad tech tools are simple, affordable, and effective. The next step in the case involves a penalty phase, with hearings scheduled to determine potential remedies.