Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1Vdl2p-0003lH-7U for bitcoin-development@lists.sourceforge.net; Tue, 05 Nov 2013 18:08:03 +0000 Received-SPF: pass (sog-mx-1.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.212.182 as permitted sender) client-ip=209.85.212.182; envelope-from=startithub@gmail.com; helo=mail-wi0-f182.google.com; Received: from mail-wi0-f182.google.com ([209.85.212.182]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1Vdl2o-000890-1i for bitcoin-development@lists.sourceforge.net; Tue, 05 Nov 2013 18:08:03 +0000 Received: by mail-wi0-f182.google.com with SMTP id ez12so2502361wid.15 for ; Tue, 05 Nov 2013 10:07:55 -0800 (PST) MIME-Version: 1.0 X-Received: by 10.194.5.7 with SMTP id o7mr18708261wjo.17.1383674875866; Tue, 05 Nov 2013 10:07:55 -0800 (PST) Received: by 10.216.208.67 with HTTP; Tue, 5 Nov 2013 10:07:55 -0800 (PST) In-Reply-To: References: <20131105170541.GA13660@petertodd.org> <20131105171445.GA13710@petertodd.org> Date: Tue, 5 Nov 2013 19:07:55 +0100 Message-ID: From: Alessandro Parisi To: Mike Hearn Content-Type: multipart/alternative; boundary=047d7b5d8d4575f8fb04ea71e9da X-Spam-Score: -0.6 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. 0.0 URIBL_BLOCKED ADMINISTRATOR NOTICE: The query to URIBL was blocked. See http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more information. [URIs: doubleclick.net] -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 (startithub[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 1.0 HTML_MESSAGE BODY: HTML included in message -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: 1Vdl2o-000890-1i Cc: Ittay , Gavin Andresen , =?ISO-8859-1?Q?Emin_G=FCn_Sirer?= , Bitcoin Dev Subject: Re: [Bitcoin-development] BIP proposal - patch to raise selfish mining threshold. 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: Tue, 05 Nov 2013 18:08:03 -0000 --047d7b5d8d4575f8fb04ea71e9da Content-Type: text/plain; charset=ISO-8859-1 I agree with Ittay: when bugs are found, they must be fixed ASAP, expecially when they affect a sensitive sw such as Bitcon; in IT security, every flaw that is exploitable in abstract, is going to be exploited in real, sooner or later, also taking into account the increasing parallel computing power; beware of false sense of security WebSite: http://www.startithub.com Per rimanere aggiornato in merito a Startup, Innovazione e Normativa di settore, sottoscrivi la nostra newsletter: http://www.startithub.com/blog/sottoscrivi-newsletter/ 2013/11/5 Mike Hearn > On Tue, Nov 5, 2013 at 6:43 PM, Ittay wrote: > >> The attack can be easily hidden. And be sure that before today, today, >> and after today, very smart people are at their computer planning attacks >> on Bitcoin. Exploits must be published and fixed FAST. >> > > I think it would be helpful if you actually implemented and pulled off > this attack, by becoming the dominant miner capable of reversing spends at > will. Then we'd know how quickly it can be done. > > > > > > ------------------------------------------------------------------------------ > November Webinars for C, C++, Fortran Developers > Accelerate application performance with scalable programming models. > Explore > techniques for threading, error checking, porting, and tuning. Get the most > from the latest Intel processors and coprocessors. See abstracts and > register > http://pubads.g.doubleclick.net/gampad/clk?id=60136231&iu=/4140/ostg.clktrk > _______________________________________________ > Bitcoin-development mailing list > Bitcoin-development@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bitcoin-development > > --047d7b5d8d4575f8fb04ea71e9da Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
I agree with Ittay: when bugs are found, they must be fixe= d ASAP, expecially when they affect a sensitive sw such as Bitcon; in IT se= curity, every flaw that is exploitable in abstract, is going to be exploite= d in real, sooner or later, also taking into account the increasing paralle= l computing power; beware of false sense of security

WebSite:= http://www.startit= hub.com
Per rimanere aggiornato in merito a Startup, Innovazione e N= ormativa di settore, sottoscrivi la nostra newsletter:=A0http://w= ww.startithub.com/blog/sottoscrivi-newsletter/


2013/11/5 Mike Hearn &= lt;mike@plan99.net= >
On Tue, Nov 5, 2013 at 6:43 PM, Ittay <ittay.eyal@cornell.edu> wrote:
The attack can be easily hidden. And be sure that before toda= y, today,=A0
and after = today, very smart people are at their computer planning attacks=A0
on Bitcoin. Exploits must be published and fixed FAST.=A0
<= /div>

I think it would be helpf= ul if you actually implemented and pulled off this attack, by becoming the = dominant miner capable of reversing spends at will. Then we'd know how = quickly it can be done.




-----------------------------------------------------------------------= -------
November Webinars for C, C++, Fortran Developers
Accelerate application performance with scalable programming models. Explor= e
techniques for threading, error checking, porting, and tuning. Get the most=
from the latest Intel processors and coprocessors. See abstracts and regist= er
http://pubads.g.doubleclick.net/gam= pad/clk?id=3D60136231&iu=3D/4140/ostg.clktrk
___________________= ____________________________
Bitcoin-development mailing list
Bitcoin-develo= pment@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bitcoin-de= velopment


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