Knowing no boundaries, cybercrime can be committed from the other side of the world as easily as from next door. Cybercrime involves three types of cases: conventional crimes committed with computers, attacks on computer networks, and conventional criminal cases. Conventional crimes include child pornography, forgery, and stalking. Attacks on computer networks include theft, espionage, political statements, vandalism, and information warfare, revenge, and attention seeking. Conventional criminal cases are cases such as drug trafficking, in which evidence exists in digital form. This article reviews some of these basic forms of cybercrime, draws specific attention to the issues that arise when offenses occur across borders and in relation to organized criminal groupings, and presents illustrations based on some of the more known cases of the past few years. Notes, references