The Universidad Nacional Autónoma de México (UNAM) cancelled the admission exams for some candidates after detecting fraud involving the use of cell phones [1], [2].

The incident highlights the vulnerabilities of digital testing and the logistical barriers facing students attempting to enter one of Mexico's most prestigious institutions.

University officials identified cheating during the 2026 digital first edition of the admission exam [3]. Reports indicate that the university cancelled the tests of two percent of the candidates due to these irregularities [1]. While some reports suggested only two students were affected, other data indicates a percentage-based cancellation [1].

Beyond the fraud, the university faced a significant lack of attendance at various exam centers across Mexico [2]. In some locations, the no-show rate reached 55% [2]. These absences were attributed to logistical issues and the high cost of travel for candidates trying to reach the designated sites [2].

Student groups have also raised concerns regarding the digital process, reporting failures within the testing platform [1]. These technical glitches, combined with the fraud cases, have complicated the 2026 admission cycle.

To address these anomalies, UNAM scheduled a control exam to be administered in person. This presential test is set to take place from 12 to 19 August 2026 [4]. The move is intended to ensure the integrity of the selection process and provide a fair opportunity for those affected by platform failures or fraud detections.

The university continues to investigate the scope of the irregularities, specifically focusing on how cell phones were used to bypass digital security measures [2].

UNAM cancelled the admission exams for some candidates after detecting fraud involving the use of cell phones.

The transition to digital admission exams at UNAM reveals a critical gap between technological implementation and accessibility. The combination of a 55% no-show rate due to travel costs and widespread platform failures suggests that digital-first initiatives may inadvertently marginalize lower-income students. Furthermore, the need for a corrective in-person exam indicates that current digital proctoring is insufficient to prevent mobile-based cheating in high-stakes academic environments.