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Denial of Service via Algorithmic Complexity

dss902 writes "We (Department of Computer Science, Rice University) present a new class of low-bandwidth denial of service attacks that exploit algorithmic deficiencies in many common applications' data structures... Using bandwidth less than a typical dialup modem, we can bring a dedicated Bro server to its knees; after six minutes of carefully chosen packets, our Bro server was dropping as much as 71% of its traffic and consuming all of its CPU. We show how modern universal hashing techniques can yield performance comparable to commonplace hash functions while being provably secure against these attacks."

3 of 257 comments (clear)

  1. WTF is a Bro server by Anonymous Coward · · Score: -1, Redundant

    Oh no.. our bro server has bad algorithms, we better fix them!

    1. Re:WTF is a Bro server by Anonymous Coward · · Score: -1, Redundant
  2. Talking of Denial of Service attacks by SkArcher · · Score: -1, Redundant

    It appears that /. has denied service to the links in the story - mirrors anyone?

    --

    An infinite number of monkeys will eventually come up with the complete works of /.