Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Malware "Ecology" Viewed as Ecological Succession: Historical Trends and
  Future Prospects   The development and evolution of malware including computer viruses, worms,
and trojan horses, is shown to be closely analogous to the process of community
succession long recognized in ecology. In particular, both changes in the
overall environment by external disturbances, as well as, feedback effects from
malware competition and antivirus coevolution have driven community succession
and the development of different types of malware with varying modes of
transmission and adaptability.

6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th