Lizard Squad is a group of hackers known for their involvement in various cyberattacks, particularly against gaming networks. They gained notoriety in late 2014 when they claimed responsibility for disrupting services on platforms like PlayStation Network and Xbox Live, affecting millions of users during the holiday season. The group often used Distributed Denial of Service (DDoS) attacks to overwhelm servers, making them inaccessible. Their actions sparked debates about online security and the ethics of hacking, leading to increased scrutiny from law enforcement and cybersecurity experts.