Guwahati: The investigating agencies have found that the cyber attack on Oil India Limited’s (OIL) system in Assamโ€™s Duliajan was executed from Nigeria.

The agencies found that the attackers had planted ransomware in its server from Nigeria.

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The attack was reported on April 10 when a cyber attack took place on one of the workstations of the Geological and Reservoir department of OIL.

It was intimated by the OIL IT department on April 12.

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The cyber attacker demanded $ 75,00,000 (over Rs 57 crore) as ransom through a note posted on the infected PC. 

The government announced a high-level probe into the issue and it was yet to figure out if the attack was a targetted one or a random one.

The criminal investigation department (CID) of Assam police took over the investigation of the Oil India Limited cyberattack case.

A team of officials from the cybercrime cell of Assam policeโ€™s CID is already camping at the field headquarters of Oil India Limited at Duliajan in the Dibrugarh district.

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Earlier, a two-member team of the Intelligence Bureau (IB) also visited the Duliajan-based field headquarters of Oil India Limited in the Dibrugarh district of Assam.