This scientific  article examines  the potential  of using  online platforms  and digital  tools for  documenting and  investigating crimes  against humanity  during armed  conflicts. The  study highlights  the role  of social  networks, specialized  internet resources,  and open-source intelligence  (OSINT) methods  in collecting,  verifying, and  disseminating information  about widespread  violations of  international humanitarian  law and  human rights.  The advantages  of these  technologies, as  well as  the challenges  related to  ensuring data  authenticity, verification  processes, legal  compliance, and  the security  of digital  evidence, are  analyzed. Additionally,  the article  discusses the  practices of  international organizations,  human rights  groups, and  judicial bodies  that utilize  internet resources  in conflict  investigations, emphasizing  their significance  in strengthening  accountability and  protecting human  rights in  the modern  world.