The Joint Admissions and Matriculation Board (JAMB) has a history of blacklisting Computer-Based Test (CBT) centres and officials involved in examination malpractices. For instance, in 2017, JAMB blacklisted 48 CBT centres for extortion and organized examination malpractices during the Unified Tertiary Matriculation Examination (UTME).

In 2019, JAMB delisted 133 CBT centres for aiding malpractices, highlighting the board's ongoing efforts to maintain the integrity of its examinations.

While there is no specific information about JAMB blacklisting six CBT officials for exam malpractice in the available sources, these past actions demonstrate JAMB's commitment to sanctioning centres and officials involved in unethical practices.