Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: One Bad Apple Spoils the Bunch: Transaction DoS in MimbleWimble
  Blockchains   As adoption of blockchain-based systems grows, more attention is being given
to privacy of these systems. Early systems like BitCoin provided few privacy
features. As a result, systems with strong privacy guarantees, including
Monero, Zcash, and MimbleWimble have been developed. Compared to BitCoin, these
cryptocurrencies are much less understood. In this paper, we focus on
MimbleWimble, which uses the Dandelion++ protocol for private transaction relay
and transaction aggregation to provide transaction content privacy. We find
that in combination these two features make MimbleWimble susceptible to a new
type of denial-of-service attacks. We design, prototype, and evaluate this
attack on the Beam network using a private test network and a network
simulator. We find that by controlling only 10% of the network nodes, the
adversary can prevent over 45% of all transactions from ending up in the
blockchain. We also discuss several potential approaches for mitigating this
attack.

31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an