Paternity fraud (pa·ter·ni·ty - fraud)

Pronunciation:/pəˈternitē, / /frôd, /

noun

• wrongful or criminal deception intended to result in financial or personal gain: he was accused of being the father of the child until DNA comparison demonstrated otherwise
• a person or thing intended to deceive others , typically by unjustifiably claiming or being credited with accomplishments or qualities: mothers exposed as tricksters and frauds

Origin:

late Middle English: from Old French paternité, fraude,  from late Latin paternitas, fraus from paternus fraud- 'deceit, injury''relating to a father'