(The canonical location of this blog post is now Why unauthenticated software download is dangerous and unethical on my web site.)

Have you ever done svn checkout http://include-what-you-use.googlecode.com/svn/trunk/ include-what-you-use?

How about download; ./configure; make; make install when the connection is HTTP and you haven't checked your download against a cryptographic hash (e.g. SHA256) or public key (e.g. PGP) provided via an authenticated channel (e.g. HTTPS)? [1]

Have you ever done these while using coffee shop or train or cellular Internet without a VPN? Or even on home WiFi in a crowded area? [2]

It's not just you whose security is at risk by these deeds.
Read more... )
(The canonical location of this blog post is now Enigmail & format=flowed on my web site.)

I decided it was time to restore my ability to sign/encrypt e-mail.

Glossary:
  • OpenPGP is a common cryptographic standard used for e-mail.

  • GPG is the FOSS implementation of this standard.

  • Thunderbird is the desktop email client I use.

  • Enigmail is the Thunderbird plugin for using GPG in Thunderbird.

  • Read more... )
I'm still trying to treat my old laptop as a secondary display, for more screen real-estate.

Main laptop: Linux
Old laptop: OS X, currently

Miscellaneous discoveries:

  • There are a few proxy X server implementations that allow switching a X client program between actual X servers! (Albeit by command line not click-and-drag.) Xmove is still being shipped in distros, though the code is old enough that it allegedly doesn't support 24-bit color.

    Xpra seems to be a modern variant with efficient network protocols and binaries for all major platforms. Unfortunately, (A) xpra has to run on both sides of a remote xpra connection; (B) my secondary display is running OS X; and (C) the Xpra OS X binary only supports[1] client mode in xpra–xpra connections (we need server mode there). Almost useful!


  • There is at least one program that can deal with multiple X displays: Emacs. I think it might be helpful to put my org-mode notes on my secondary screen, so that's cool.

  • Read more... )

Xdmx


Xdmx is an X11 tool that lets you treat two or more* X11 servers as two or more monitors. I tried to use it to make an old laptop be an external monitor (connecting over Ethernet). The old laptop would run an X server, and Xdmx would connect to that X server and to the one on my regular laptop. Then X11 applications would connect to Xdmx (which itself provides an X-server API), and I could move them between screens at will. Theoretically.
Read more... )

Data wisdom

Nov. 7th, 2012 07:48 pm
(The canonical location of this blog post is now Data-sharing Wisdom on my web site.)

I love Hubway and data, but was it really a good idea to release everyone's trip data? This is past, somewhat-anonymized data, for a contest to visualize how people are using the bike-sharing system. I can history-stalk everyone in Southborough who has a Hubway membership now :-(
Read more... )

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