## 5 Discussion  
### Discovery of Collaborative Effect  
This paper argues that if the similarity value of the science-technology topic is greater than 0.6686, it indicates that there is a collaborative relationship between the two topics. According to statistics (with science topics as the main body of the topic pairs), from stage 1 to stage 10, the number of collaborative topic pairs is 242, 242, 340, 329, 285, 313, 233, 345, 252, and 459 pairs. Among them, the number of topic pairs belonging to the co-occurrence association evolutionary type is 30, 31, 40, 40, 30, 39, 23, 21, 13, and 28 pairs successively. Based on the identification results of science and technology research topics, as well as the statistics and analysis of the number of the two types of topic pairs, this paper finds that in the field of cybersecurity, science and technology present a collaborative evolutionary situation of \"initial accumulation-fluctuating differentiation-deep collaboration\". (1) Stage 1 to Stage 4 (2005-2012): the intensive emergence of basic collaboration  
From the perspective of quantity, the number of collaborative topic pairs increased from 242 pairs in stage 1 and stage 2 to 340 pairs in stage 3, and then to 329 pairs in stage 4. The number of co-occurrence-type topic pairs gradually increased from 30 pairs in stage 1 to 40 pairs in stages 3 and 4, reaching a peak in these two stages. Overall, these two types of topic pairs show a rising trend with high collaborative density, reflecting the close interaction characteristics between science and technology. Based on the topic identification results, 2005-2012 was in the initial stage of the systematic construction of cybersecurity. The research topics of science and technology mainly focused on the construction of basic infrastructure and the preliminary exploration of attack and defense technologies. Among them, scientific research was carried out around several aspects, such as network attack detection (such as S1_2, S2_1, S3_2), attack behavior analysis (such as S1_5), and defense mechanism enhancement (such as S1_8, S4_5). Technical research and development focused on basic security architecture (such as T1_3, T2_7) and the construction of defense mechanisms (such as T3_4). Meanwhile, the popularization of 3G networks and the rise of mobile office requirements also drove the expansion and extension of science and technology research towards communication security, identity management, and other directions (such as S1_4, S2_4, T3_1, T4_5). In this stage of research, a preliminary accumulation of the collaborative relationship between science and technology was achieved. They closely cooperated and made progress together, laying the foundation for subsequent research. Stage 5 to Stage 7 (2013-2018): fluctuation and differentiation of scenario-based collaboration  
From the perspective of quantity, the number of the two types of topic pairs decreased to 285 and 30, respectively, in stage 5, and then rebounded to 313 and 39 in stage 6. In stage 7, they further declined to 233 and 23, exhibiting a significant trend of collaborative fluctuation. Based on the topic recognition results, with the deep integration of cloud computing and Internet technologies and the in-depth development of attack and defense technologies, scientific research in this period began to shift from basic defense to complex scenarios. In 2013, the Prism Gate incident broke out, and \"Privacy Protection (S5_5)\" became an emerging scientific focus. However, the lag in technology implementation (such as \"File and Image Security Risk Analysis (T6_6)\") led to a short-term decline in the co-occurrence association evolution of topics in stage 5. During stage 6, there was a surge in ransomware and advanced persistent threats, and both the scientific and technological fields began to intensify their research efforts on authentication technologies (such as S6_1, T6_2) and security defense technologies.