Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Peer to Peer Networks for Defense Against Internet Worms   Internet worms, which spread in computer networks without human mediation,
pose a severe threat to computer systems today. The rate of propagation of
worms has been measured to be extremely high and they can infect a large
fraction of their potential hosts in a short time. We study two different
methods of patch dissemination to combat the spread of worms. We first show
that using a fixed number of patch servers performs woefully inadequately
against Internet worms. We then show that by exploiting the exponential data
dissemination capability of P2P systems, the spread of worms can be halted very
effectively. We compare the two methods by using fluid models to compute two
quantities of interest: the time taken to effectively combat the progress of
the worm and the maximum number of infected hosts. We validate our models using
Internet measurements and simulations.

36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics