Random Access Thoughts

bad news: de-anonymizing social networks

cx22 — Mon, 30 Mar 2009 23:25:25 +0000

Operators of online social networks are increasingly
sharing potentially sensitive information about users and
their relationships with advertisers, application developers,
and data-mining researchers. Privacy is typically protected
by anonymization, i.e., removing names, addresses, etc.
We present a framework for analyzing privacy and
anonymity in social networks and develop a new
re-identification algorithm targeting anonymized social-
network graphs. To demonstrate its effectiveness on real-
world networks, we show that a third of the users who
can be verified to have accounts on both Twitter, a popular
microblogging service, and Flickr, an online photo-sharing
site, can be re-identified in the anonymous Twitter graph
with only a 12% error rate.
Our de-anonymization algorithm is based purely on the
network topology, does not require creation of a large
number of dummy “sybil” nodes, is robust to noise and all
existing defenses, and works even when the overlap between
the target network and the adversary’s auxiliary information
is small.

the future will be decentralized or it wont be

cx22 — Mon, 30 Mar 2009 23:18:48 +0000

Decentralization: the future of Online Social networking

Routing problems in decentralized networks

Tahoe: a secure distributed file system

drawing graphs reference

cx22 — Mon, 02 Feb 2009 16:18:58 +0000

one of my recent new bibles:
Graph Drawing: methods and models.
It’s being an entertaining lecture.

is your cat infected?

cx22 — Mon, 02 Feb 2009 16:12:17 +0000

Maybe you couldnt say unless you invert some of your critical savings in something like this.

pwning the pwnd

cx22 — Mon, 02 Feb 2009 15:45:59 +0000

I got some surprise growing when I first saw the neo-pwn edition.

I dont quite understand the freedom of the GPL. Or yes I do, but I dont like others taking too much profit out of community effort. I want to read the sources. And now it results that I have to buy their microsd card before they think if they can show me their wonderful kernel customizations.

Fortunately, we are reading here that since 2.6.28 version there is a good mac80211 stack included in the kernel, which makes the magic alfa 500 card work quite well, including monitor mode and injection rate, as long as wpa and wpa2 management with the same driver.

I’m trying aircrack patches with the 2.6.29 git openmoko – andy-tracking branch, and then we will see if we can build the rtl8187 module… that way we will have a pretty penetration-testing mobile platform… with all the debian goodies included

Keep reading…

random access hate

cx22 — Mon, 02 Feb 2009 15:36:02 +0000

I hate wordpress. I hate big providers. I ate my hate.

I need a quick place where I can later refere. Let leave the db dumping for tomorrow.

Today I feel I’ve been back to sometime ago. The same places, the same faces, the same old shit.

But now I’ve got a plan.