Though the attack on the Australian subsidiary was more massive, the later one has initiated the investigation in details. Investigators and experts suspected that the infamous APT 32 (Ocean Lotus) is behind the attacks. These Vietnamese cyber espionage actors target mostly the private sectors.
Australia attacks occurred way back in February 2018, however the most recent attack is supposedly not related but the experts doubt the first attack might have been the preparation of the bigger one at the central security system in Japan. Toyota is not ready to acknowledge or reveal any particular names involved in these attacks.
These repeated incidents highlight how the internet is a boon and a curse at the same time. Many other companies are learning to be more alert and undertake measures to prevent such theft and misuse of customer data. Cybercrime officials, on the other hand, are also engaged in continuous monitoring all over the world. They also highlight the need for more tight security from the company’s end to protect customer details from unauthorized cybercriminals.