In the context of EU digital competences, imagine a European External Action Service (EEAS) official managing a diplomatic mission in a conflict zone. The EEAS, under the political guidance of the High Representative, aims to provide coherence and coordination to the Union's international action, promoting peace, human rights, and a world order based on rules. Given that the EEAS closely coordinates with member states' foreign ministries and other EU institutions, which principle of digital security should the official prioritize when sharing sensitive information about conflict resolution through digital communication channels, in line with the EU's values of a rule-based world order and human rights?