It was once presumed that costs of Internet adoption were too great for gang members to absorb. They lacked the financial resources to access the Internet or the technological know-how to use it. That is no longer the case, which leads to two questions: What are gang members doing online? What are the responses to gangs online? The growing research on this topic indicates that gang members are online and using the Internet at a rate comparable to their peers. This occurs in the United States and abroad. Gangs do not exploit the Internet to its criminal potential, even though the law enforcement community suggests otherwise. This is most likely due to the low technological capacities of gang members. However, gang members do engage in higher rates of crime and deviance online than their non-gang peers. Gang members also use the Internet to posture, provoke, and project group power, particularly on leading social media platforms such as Facebook, Twitter, and YouTube, which in turn allows activities occurring online to have ramifications for crime and violence offline. It is debatable whether online space is as important to gangs as physical space, but the Internet is undoubtedly a valuable medium to gangs. The potential for conflict and the posting of gang images has attracted the attention of law enforcement as well as researchers to document this activity. Platforms are being developed to anticipate the spilling of online gang conflicts offline. Since the Internet is a value-neutral medium that engages youth and young adults, it is anticipated that social media and the Internet will continue to appeal to gangs and gang members for the foreseeable future.