Articles on Security

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Members of the Yansakai vigilante group in north-west Nigeria surrendering their weapons, 2019. Kola Sulaimon/AFP via Getty Images

Nigeria’s terror group Lakurawa is nothing new – it exists because of government’s failure: analysts

Nigeria describes Lakurawa as a new terror group. It is not. It’s been operating along the Nigeria-Niger border since 1999, an indication of the region’s growing ungoverned spaces.
It’s not easy for computers to tell humans from other computers posing as humans. Andrii Shelenkov/Stock via Getty Images

CAPTCHAs: The struggle to tell real humans from fake

CAPTCHAs are a key part of the arms race between AI deceivers and AI deception detectors. A computer scientist explains how they work.

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