Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two Can Play That Game: An Adversarial Evaluation of a Cyber-alert
  Inspection System   Cyber-security is an important societal concern. Cyber-attacks have increased
in numbers as well as in the extent of damage caused in every attack. Large
organizations operate a Cyber Security Operation Center (CSOC), which form the
first line of cyber-defense. The inspection of cyber-alerts is a critical part
of CSOC operations. A recent work, in collaboration with Army Research Lab, USA
proposed a reinforcement learning (RL) based approach to prevent the
cyber-alert queue length from growing large and overwhelming the defender.
Given the potential deployment of this approach to CSOCs run by US defense
agencies, we perform a red team (adversarial) evaluation of this approach.
Further, with the recent attacks on learning systems, it is even more important
to test the limits of this RL approach. Towards that end, we learn an
adversarial alert generation policy that is a best response to the defender
inspection policy. Surprisingly, we find the defender policy to be quite robust
to the best response of the attacker. In order to explain this observation, we
extend the earlier RL model to a game model and show that there exists defender
policies that can be robust against any adversarial policy. We also derive a
competitive baseline from the game theory model and compare it to the RL
approach. However, we go further to exploit assumptions made in the MDP in the
RL model and discover an attacker policy that overwhelms the defender. We use a
double oracle approach to retrain the defender with episodes from this
discovered attacker policy. This made the defender robust to the discovered
attacker policy and no further harmful attacker policies were discovered.
Overall, the adversarial RL and double oracle approach in RL are general
techniques that are applicable to other RL usage in adversarial environments.

29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex