Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Survey on Limitation, Security and Privacy Issues on Additive
  Manufacturing   Additive manufacturing (AM) is growing as fast as anyone can imagine, and it
is now a multi-billion-dollar industry. AM becomes popular in a variety of
sectors, such as automotive, aerospace, biomedical, and pharmaceutical, for
producing parts/ components/ subsystems. However, current AM technologies can
face vast risks of security issues and privacy loss. For the security of AM
process, many researchers are working on the defense mechanism to
countermeasure such security concerns and finding efficient ways to eliminate
those risks. Researchers have also been conducting experiments to establish a
secure framework for the user's privacy and security components. This survey
consists of four sections. In the first section, we will explore the relevant
limitations of additive manufacturing in terms of printing capability,
security, and possible solutions. The second section will present different
kinds of attacks on AM and their effects. The next part will analyze and
discuss the mechanisms and frameworks for access control and authentication for
AM devices. The final section examines the security issues in various
industrial sectors and provides the observations on the security of the
additive manufacturing process.

18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex