Modem activity shows it was used by people in house that night: Scientist

The CBI on Thursday produced Bhupendra Singh, a scientist with the Computer Emergency Response Team (CERT) under the Ministry of Information and Technology, as prosecution witness in the Aarushi-Hemraj murder trial.

Dentist-couple Rajesh and Nupur Talwar are facing trial for the murder of their 14-year-old daughter Aarushi and domestic help Hemraj in May 2008.

Singh said the activity of the Internet router at the Talwars' Noida home on the intervening night of May 15 and May 16, 2008, meant that it was being used by people in the house.

On September 8, 2010, CERT received a letter from then CBI SP, asking for the logs of the modem connected to the number 01205316388 (belonging to the Talwars), he said.

"Four questions were asked. One, what are the possible reasons of start and stop activity of the Internet logs? Two, what is the reason behind intervals between two sessions? Three, do long intervals show user activity? Four, what websites were visited during this session?" he said.

Singh said if there were intervals of around five seconds between sessions, "this would mean that the modem was trying to reconnect with the ISP".

"However, these logs show intervals of 26 minutes 20 seconds, six minutes 54 seconds and two hours 58 minutes. This means, the user switched off the modem and then restarted it," Singh told the court in Ghaziabad. He will be cross-examined on October 16.

Deepak Kanda, the nodal officer for Airtel, was also present in court. But his cross examination was deferred to October 16 after the defence counsel suggested that they would question the two specialists together. "In accordance with law, we have full right to request for this," Manoj Sisodia, the advocate for the Talwars, said.

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