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Date: Wed, 24 Oct 2012 22:58:30 +0200
Message-ID: <CANEZrP0KN6+Jh4Lc1Cs15a1zk6eKeXRZ7aEoeUDE148arvZw1Q@mail.gmail.com>
From: Mike Hearn <mike@plan99.net>
To: Gavin Andresen <gavinandresen@gmail.com>
Content-Type: text/plain; charset=UTF-8
Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] Draft BIP for Bloom filtering
Precedence: list

> What is the worst-case for an attacker interested in trying to get you
> to saturate your upstream bandwidth or use lots of memory?  Set a
> bloom filter that matches everything, and then start requesting old
> blocks in the chain?

It would be slightly worse than shipping a full block but not seriously so.

If you just want to saturate bandwidth or disk IOPS you could probably
just request random blocks over and over again.