Recent cartels have an ever more complex setup. The most common aspect of a cartel is price-fixing. Fighting global cartels has been a core task for competition authorities. With expanding industries, such as the information technology sector being well suited to cartels, competition authority practices show a growing number of these unlawful groups. The empirical evidence has supported a domino effect in this area. Interestingly, a few trends have emerged that attempt to prevent the actions of these cartels. Leniency programs have produced a consistent lineup of satisfactory applications. Another strategy to fight international cartels is international cooperation. The international competition network can develop common standards and tools, and build a global environment of trust among competition enforcers.