The Enemy Within: How the ANC lost the battle against corruption (2022) is a book by Mpumelelo Mkhabela, a South African journalist and political analyst.

[1] Mkhabela focuses on the ANC's "new cadre" policy wherein loyal party members were deployed in important positions in government and state-owned enterprises; what the long-term impact of this policy was and how it greatly contributed to the growth of corruption within the party.

Mkhabela does this by detailing a number of well-publicised ANC corruption scandals that occurred during the presidencies of Nelson Mandela, Thabo Mbeki, Jacob Zuma, and Cyril Ramaphosa.

These scandals include the Tony Yengeni controversy, the disbandment of the Scorpions, the Gupta family, Jackie Selebi, and corruption within the Zuma administration generally.

[4] Political scientist, poet and ANC member Keith Gottschalk described the book as "the latest in a cascade of publications over the last decade that record corruption and theft by leading politicians in the country’s ruling party"[1] and stated that in a less free or democratic society the author of such a book would be arrested and harassed.