The Indian government has told Research in Motion (RIM) that it must stop its services if it fails to grant access to Blackberry corporate email, according to an official.
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The government is concerned that terrorists could use encrypted services to co-ordinate attacks.
Speaking to Indian news agency, PTI, union home secretary, G K Pillai, said data transferred through the country's networks should be able to be intercepted in accordance with its Law Enforcement Agency (LEA).
He confirmed the Indian government had not extended the 31 January deadline for compliance. "We have not extended the date, but it has not been terminated," he said.
"Our aim is to make sure that whatever goes through our networks, we should be able if required to intercept," he added.
RIM reiterated last month there was no possibility of giving the authorities access. The Blackberry maker announced in January that it had given the Indian government access to basic Blackberry Messenger (BBM) and Blackberry Internet Service e-mail.
But India's home minister said authorities would insist RIM provides a similar solution for the enterprise service, according to the Financial Times.
In August last year, the Indian government threatened to ban BlackBerry services if it failed to provide the government full access to its services.
The threat was revoked after RIM agreed to address the government's security concerns by 31 January.