Libraries throughout the borough boast over 50 computer workstations all with free internet access provided through by the Welsh Assembly Government's People's Network initiative.
This policy is now embracing the library service to protect users, both children and adults, from the potential threats that exist in using internet chat rooms.
The filtering software will be instructed to block access to internet chat room sites through all the library computers. This should make it difficult for users to be able to reach chat rooms intentionally or unintentionally.
Nigel Daniels, executive member for leisure services, said: 'Our child protection policy has been held as an exemplar policy by the Sports Council for Wales, Gwent Police and other local authorities and we are extending it to cover internet chat rooms to protect the users of our library computers as we protect the users of our sports facilities.
'Introducing The People's Network to Blaenau Gwent Libraries was one our major successe s in recent years in terms of public library development. It has opened up many new opportunities for library users to gain access to world wide information, improved communications via email and to learn and acquire new computer skills.
'But unfortunately we have to acknowledge there is also a downside to its capabilities that we are not in a position to control. So in order to protect all our users we are denying access to sites such as internet chat rooms.'
Users will be reminded of Blaenau Gwent CBC's Safe Surfing Tips to ensure their continued enjoyment of this free internet service.