DedSec is a fictional hacker group featured in the video game series Watch Dogs. They operate as a collective of skilled hackers who aim to expose corruption and fight against oppressive surveillance systems. Their activities often involve hacking into government and corporate networks to reveal secrets and promote social justice. The group is known for its use of technology and social media to rally support and spread their message. Players can join DedSec in the games, taking on missions that challenge powerful entities and encourage citizens to reclaim their privacy and freedom in a digital world.