'There was a lack of active detection mechanisms, and activities to detect the presence or absence of things that became public,' the spokesperson said in response to why it took time to realise there had been an error. It could encompass details such as vehicle locations and identification numbers of vehicle devices, but there were no reports of malicious use, the company said. The issue, which began in November 2013 and lasted until mid-April, stemmed from human error, leading to a cloud system being set to public instead of private, a Toyota spokesperson said. The incident, which also affected customers of its luxury brand Lexus, comes as the world's biggest automaker by sales makes a push into vehicle connectivity and cloud-based data management which are seen as crucial to offering autonomous driving and other artificial intelligence-backed features.

TOKYO, May 12 (Reuters) - Toyota Motor Corp (7203.T) said on Friday the vehicle data of 2.15 million users in Japan, or almost the entire customer base who signed up for its main cloud service platforms since 2012, had been publicly available for a decade due to human error.

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