Received: from sog-mx-2.v43.ch3.sourceforge.com ([172.29.43.192] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1XBlb3-0005iv-JH for bitcoin-development@lists.sourceforge.net; Mon, 28 Jul 2014 14:08:13 +0000 Received-SPF: pass (sog-mx-2.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.220.176 as permitted sender) client-ip=209.85.220.176; envelope-from=gmaxwell@gmail.com; helo=mail-vc0-f176.google.com; Received: from mail-vc0-f176.google.com ([209.85.220.176]) by sog-mx-2.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1XBlb1-0001br-Sl for bitcoin-development@lists.sourceforge.net; Mon, 28 Jul 2014 14:08:13 +0000 Received: by mail-vc0-f176.google.com with SMTP id id10so11206347vcb.35 for ; Mon, 28 Jul 2014 07:08:06 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.221.44.69 with SMTP id uf5mr651948vcb.4.1406556485789; Mon, 28 Jul 2014 07:08:05 -0700 (PDT) Received: by 10.53.9.43 with HTTP; Mon, 28 Jul 2014 07:08:05 -0700 (PDT) In-Reply-To: <06e8ee730ac511617e6c3c4a4bbae4bb@webmail.mckay.com> References: <20140728024030.GA17724@savin> <53D5BB5F.2060200@bitwatch.co> <06e8ee730ac511617e6c3c4a4bbae4bb@webmail.mckay.com> Date: Mon, 28 Jul 2014 07:08:05 -0700 Message-ID: From: Gregory Maxwell To: Robert McKay Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -1.6 (-) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for sender-domain 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (gmaxwell[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-Headers-End: 1XBlb1-0001br-Sl Cc: Bitcoin Development Subject: Re: [Bitcoin-development] Abnormally Large Tor node accepting only Bitcoin traffic X-BeenThere: bitcoin-development@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Jul 2014 14:08:13 -0000 On Mon, Jul 28, 2014 at 5:31 AM, Robert McKay wrote: > I don't think Sybil attack is the right term for this.. there is only > one IP address.. one "identity". The bitcoin protocol is more or less identityless. It's using up lots of network capacity, "number of sockets" is as pretty close as you get. > I'm not even sure that this behaviour can be considered abuse.. it's > pretty much following the rules and maybe even improving the transaction > and block propagation. It isn't relaying transactions or blocks as far as anyone with a connection to it can tell. and sure, probably not much to worry about=E2=80=94 people have been runnin= g spy nodes for a long time, at least that much is not new.