A Cybersecurity Knowledge Graph Completion Method for Penetration Testing

Penetration testing is an effective method of making computers secure. When conducting penetration testing, it is necessary to fully understand the various elements in the cyberspace. Prediction of future cyberspace state through perception and understanding of cyberspace can assist defenders in decision-making and action execution. Accurate cyberspace detection information is the key to ensuring successful penetration testing. However, cyberspace situation awareness still faces the following challenges. Due to the limited detection capability, the information obtained from cyberspace detection intelligence is incomplete. There are some errors in the cyberspace detection intelligence, which may mislead the penetration testing workers. The knowledge graph can store and manage the cybersecurity data. In order to ensure the integrity and accuracy of cyberspace information, we design a knowledge graph completion model called CSNT to complete cybersecurity data. CSNT uses the BiLSTM to capture the interaction information between entities and relationships. It models the relationship between entities by combining the neural network and tensor decomposition. The Pearson Mix Net is designed to control the generation of joint vectors. We also design a novel self-distillation strategy to reduce catastrophic forgetting during model training. After learning the relationship pattern between entities in the cyberspace detection intelligence, the model can be used to mine the knowledge not found in the cybersecurity detection intelligence and correct the erroneous records. Experiments show that our method has certain advantages for the knowledge graph completion.