The Union home ministry has issued an advisory to six ministries that Pakistani intelligence agencies are planning to 'infiltrate' into their internal communication in order to retrieve classified information.
The security advisory was sent to the ministries of defence, external affairs, civil aviation, finance, power and telecom asking them to ensure that all computers carrying classified information be put on "intranet" (an internal communication software) and no official accesses them on those machines.
The advisory said the Pakistani intelligence agencies were particularly targeting headquarters of sensitive security establishments of the armed and paramilitary forces in order to obtain sensitive information by befooling government officials, PTI reported quoting official sources as saying.
The Pakistani agencies may be using their proxies in order to run this spy ring and making any detection or tracking them almost impossible, sources told PTI.
According to the advisory, it has been impossible to do a back-tracking exercise on these numbers as they leave very little or no electronic trace behind them and use the international gateways for such purposes.
The advisory comes amid escalating cross-border firing in Jammu and Kashmir and ahead of scheduled talks between the national security advisors of India and Pakistan in New Delhi which may focus on countering terror attacks.
On Wednesday, a terrorist was caught after he and an accomplice attacked a Border Security Force (BSF) convoy at Udhampur and killed two troopers. His accomplice, from Bahawalpur in Pakistani Punjab, was gunned down by security forces.
Naveed, 22, has told investigators that he trained at a Lashkar-e-Taiba camp in Pakistan before he entered India some 45 days ago. His home – the terrorist told his interrogators – is deep inside Ghulam Mohammadabad, the largest residential area in the old quarters of Faislabad.
His father Yakub told Hindustan Times that he is the "unfortunate father" of the terrorist captured in India.
"I'll be killed, Lashkar and the Pakistani army are after us," said Yakub.
Pakistan, however, has denied India's accusations about Naveed's Pakistani nationality and asked it to provide "correct evidence".
Pakistan Foreign Office spokesperson Qazi Khalilullah said: "We have said many a times that making immediate accusations on Pakistan is not correct. These things should be based on facts. We expect that whenever Pakistan is being accused of something, it will be accompanied with correct evidence."
(With PTI inputs)