One month after a US court declared Google's search engine an illegal monopoly, the tech giant is facing another legal challenge. This week, the European Union's top court rejected Google's appeal against a $2.7 billion penalty imposed in 2017 by the European Commission. The fine was levied for violating antitrust rules related to its comparison shopping service. The European Commission, the chief antitrust enforcer for the 27-nation bloc, had determined that Google abused its dominant position in the market.