Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Overview of Backdoor Attacks Against Deep Neural Networks and
  Possible Defences   Together with impressive advances touching every aspect of our society, AI
technology based on Deep Neural Networks (DNN) is bringing increasing security
concerns. While attacks operating at test time have monopolised the initial
attention of researchers, backdoor attacks, exploiting the possibility of
corrupting DNN models by interfering with the training process, represents a
further serious threat undermining the dependability of AI techniques. In a
backdoor attack, the attacker corrupts the training data so to induce an
erroneous behaviour at test time. Test time errors, however, are activated only
in the presence of a triggering event corresponding to a properly crafted input
sample. In this way, the corrupted network continues to work as expected for
regular inputs, and the malicious behaviour occurs only when the attacker
decides to activate the backdoor hidden within the network. In the last few
years, backdoor attacks have been the subject of an intense research activity
focusing on both the development of new classes of attacks, and the proposal of
possible countermeasures. The goal of this overview paper is to review the
works published until now, classifying the different types of attacks and
defences proposed so far. The classification guiding the analysis is based on
the amount of control that the attacker has on the training process, and the
capability of the defender to verify the integrity of the data used for
training, and to monitor the operations of the DNN at training and test time.
As such, the proposed analysis is particularly suited to highlight the
strengths and weaknesses of both attacks and defences with reference to the
application scenarios they are operating in.

18
The categories of this paper are: econ
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: eess
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
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The categories of this paper are: q-fin
3
The categories of this paper are: physics