A Doppelganger campaign is a cyber deception tactic where attackers create fake websites or online platforms that closely mimic legitimate sources. These cloned sites are used to spread disinformation, manipulate public opinion, or steal sensitive data by tricking users into believing they are interacting with the real source. Doppelganger campaigns are often employed in information warfare, phishing attacks, or propaganda efforts, making it difficult for users to distinguish between authentic and fraudulent content.