Catfishing is a deceptive practice where an individual creates a false identity online to lure others into a relationship or interaction, often for malicious purposes such as fraud or emotional manipulation. This can involve using fake profiles on social media or dating sites, often featuring stolen photos and fabricated personal details. The term gained popularity from the 2010 documentary "Catfish," which explored the complexities of online relationships and identity. Ultimately, catfishing undermines trust and can lead to significant emotional and financial consequences for the victims involved.