X-Git-Url: https://pere.pagekite.me/gitweb/homepage.git/blobdiff_plain/422052cc739005d7f4e309fc030afc95eb0425bd..4ee892a3236a53db380f451a53c5b64d6edc780d:/blog/index.rss diff --git a/blog/index.rss b/blog/index.rss index 9a2219974a..b83767956f 100644 --- a/blog/index.rss +++ b/blog/index.rss @@ -6,6 +6,40 @@ http://people.skolelinux.org/pere/blog/ + + Dokumentaren om Datalagringsdirektivet sendes endelig på NRK + http://people.skolelinux.org/pere/blog/Dokumentaren_om_Datalagringsdirektivet_sendes_endelig_p__NRK.html + http://people.skolelinux.org/pere/blog/Dokumentaren_om_Datalagringsdirektivet_sendes_endelig_p__NRK.html + Wed, 26 Mar 2014 09:50:00 +0100 + <p><a href="http://www.nuug.no/">Foreningen NUUG</a> melder i natt at +NRK nå har bestemt seg for +<a href="http://www.nuug.no/news/NRK_viser_filmen_om_Datalagringsdirektivet_f_rste_gang_2014_03_31.shtml">når +den norske dokumentarfilmen om datalagringsdirektivet skal +sendes</a> (se <a href="http://www.imdb.com/title/tt2832844/">IMDB</a> +for detaljer om filmen) . Første visning blir på NRK2 mandag +2014-03-31 kl. 19:50, og deretter visninger onsdag 2014-04-02 +kl. 12:30, fredag 2014-04-04 kl. 19:40 og søndag 2014-04-06 kl. 15:10. +Jeg har sett dokumentaren, og jeg anbefaler enhver å se den selv. Som +oppvarming mens vi venter anbefaler jeg Bjørn Stærks kronikk i +Aftenposten fra i går, +<a href="http://www.aftenposten.no/meninger/kronikker/Autoritar-gjokunge-7514915.html">Autoritær +gjøkunge</a>, der han gir en grei skisse av hvor ille det står til med +retten til privatliv og beskyttelsen av demokrati i Norge og resten +verden, og helt riktig slår fast at det er vi i databransjen som +sitter med nøkkelen til å gjøre noe med dette. Jeg har involvert meg +i prosjektene <a href="http://www.dugnadsnett.no/">dugnadsnett.no</a> +og <a href="https://wiki.debian.org/FreedomBox">FreedomBox</a> for å +forsøke å gjøre litt selv for å bedre situasjonen, men det er mye +hardt arbeid fra mange flere enn meg som gjenstår før vi kan sies å ha +gjenopprettet balansen.</p> + +<p>Jeg regner med at nettutgaven dukker opp på +<a href="http://tv.nrk.no/program/koid75005313/tema-dine-digitale-spor-datalagringsdirektivet">NRKs +side om filmen om datalagringsdirektivet</a> om frem dager. Hold et +øye med siden, og tips venner og slekt om at de også bør se den.</p> + + + Public Trusted Timestamping services for everyone http://people.skolelinux.org/pere/blog/Public_Trusted_Timestamping_services_for_everyone.html @@ -692,90 +726,5 @@ command line stuff.<p> - - A fist full of non-anonymous Bitcoins - http://people.skolelinux.org/pere/blog/A_fist_full_of_non_anonymous_Bitcoins.html - http://people.skolelinux.org/pere/blog/A_fist_full_of_non_anonymous_Bitcoins.html - Wed, 29 Jan 2014 14:10:00 +0100 - <p>Bitcoin is a incredible use of peer to peer communication and -encryption, allowing direct and immediate money transfer without any -central control. It is sometimes claimed to be ideal for illegal -activity, which I believe is quite a long way from the truth. At least -I would not conduct illegal money transfers using a system where the -details of every transaction are kept forever. This point is -investigated in -<a href="https://www.usenix.org/publications/login">USENIX ;login:</a> -from December 2013, in the article -"<a href="https://www.usenix.org/system/files/login/articles/03_meiklejohn-online.pdf">A -Fistful of Bitcoins - Characterizing Payments Among Men with No -Names</a>" by Sarah Meiklejohn, Marjori Pomarole,Grant Jordan, Kirill -Levchenko, Damon McCoy, Geoffrey M. Voelker, and Stefan Savage. They -analyse the transaction log in the Bitcoin system, using it to find -addresses belong to individuals and organisations and follow the flow -of money from both Bitcoin theft and trades on Silk Road to where the -money end up. This is how they wrap up their article:</p> - -<p><blockquote> -<p>"To demonstrate the usefulness of this type of analysis, we turned -our attention to criminal activity. In the Bitcoin economy, criminal -activity can appear in a number of forms, such as dealing drugs on -Silk Road or simply stealing someone else’s bitcoins. We followed the -flow of bitcoins out of Silk Road (in particular, from one notorious -address) and from a number of highly publicized thefts to see whether -we could track the bitcoins to known services. Although some of the -thieves attempted to use sophisticated mixing techniques (or possibly -mix services) to obscure the flow of bitcoins, for the most part -tracking the bitcoins was quite straightforward, and we ultimately saw -large quantities of bitcoins flow to a variety of exchanges directly -from the point of theft (or the withdrawal from Silk Road).</p> - -<p>As acknowledged above, following stolen bitcoins to the point at -which they are deposited into an exchange does not in itself identify -the thief; however, it does enable further de-anonymization in the -case in which certain agencies can determine (through, for example, -subpoena power) the real-world owner of the account into which the -stolen bitcoins were deposited. Because such exchanges seem to serve -as chokepoints into and out of the Bitcoin economy (i.e., there are -few alternative ways to cash out), we conclude that using Bitcoin for -money laundering or other illicit purposes does not (at least at -present) seem to be particularly attractive."</p> -</blockquote><p> - -<p>These researches are not the first to analyse the Bitcoin -transaction log. The 2011 paper -"<a href="http://arxiv.org/abs/1107.4524">An Analysis of Anonymity in -the Bitcoin System</A>" by Fergal Reid and Martin Harrigan is -summarized like this:</p> - -<p><blockquote> -"Anonymity in Bitcoin, a peer-to-peer electronic currency system, is a -complicated issue. Within the system, users are identified by -public-keys only. An attacker wishing to de-anonymize its users will -attempt to construct the one-to-many mapping between users and -public-keys and associate information external to the system with the -users. Bitcoin tries to prevent this attack by storing the mapping of -a user to his or her public-keys on that user's node only and by -allowing each user to generate as many public-keys as required. In -this chapter we consider the topological structure of two networks -derived from Bitcoin's public transaction history. We show that the -two networks have a non-trivial topological structure, provide -complementary views of the Bitcoin system and have implications for -anonymity. We combine these structures with external information and -techniques such as context discovery and flow analysis to investigate -an alleged theft of Bitcoins, which, at the time of the theft, had a -market value of approximately half a million U.S. dollars." -</blockquote></p> - -<p>I hope these references can help kill the urban myth that Bitcoin -is anonymous. It isn't really a good fit for illegal activites. Use -cash if you need to stay anonymous, at least until regular DNA -sampling of notes and coins become the norm. :)</p> - -<p>As usual, if you use Bitcoin and want to show your support of my -activities, please send Bitcoin donations to my address -<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&label=PetterReinholdtsenBlog">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p> - - -