Prime Minister Narendra Modi-led government has urged the state government to use state-run telecom operators' services to ensure data security. In a letter written by the Department of Telecommunications (DoT) to various state governments, the centre has recommended the use of Bharat Sanchar Nigam (BSNL) and Mahanagar Telephone Nigam (MTNL), the Economic Times reported. This comes at a time when the centre is pinning its hope on government-run telecom companies and is taking initiatives to revive them.