Critical infrastructure protection – the global evolving need when it comes to ensuring security – is perceived differently from one country to another. The difference come from the country's specific development features and its geographic location. While both the EU and NATO focus on developing an integrative approach, impediments to that come from the member states' perceptions pose specific risks and opportunities. This paper offers a case study of Romania's energy sector building up on the critical infrastructure protection, looking at the broad, but key items that the sector considers. Considering the current geopolitical balance in the Central and Eastern European region, Romania's case is showing the pitfalls for securing the Eastern frontier of both NATO of the EU.