Category: Uncategorized

Gambit REPL

I try Gambit Scheme almost once a year, therefore I am a casual user at best. It may be because Racket comes with a fullfilling environment and a book. But now with Gambit REPL on the iPad, this is going to be more frequent. It reminded me the days of LispMe and the Palm IIIx years ago.

Update: A few days later I wondered whether there exists a good calculator for the iPad. And then it struck me: I already had a Polish Notation one: The Gambit REPL.

Foreseeing stuxnet?

I copy from “Inside Cyber Warfare“:

“For instance, a cyber attack might shut down a system, rendering it inoperable for some time, or a cyber attack might cause an explosion at a chemical plant by tampering with the computers that control the feed mixture rates. The results of those attacks mirror the results of conventional armed attacks, previously only achievable through kinetic force, thus satisfying the instrument based approach.”

The book was published in 2009. This quote is taken verbatim from “Solving the Dilemma of State Responses to Cyberattacks” which is again dated April 2009.

Stuxnet was detected around July 2010. Sort of Life imitating Art…

Update: Shortly after I pressed [Publish] my twitter stream was filled with mentions of “How Digital Detectives Deciphered Stuxnet, the Most Menacing Malware in History“.

Directory Listing Denied

Dedicated to those people who insist that http://www.example.com and http://example.com must point to the same thing. Like I’ve said before, they are not the same thing, they are supposed to be equal only in the eyes of the inexperienced, and yes they are one more place for configuration errors (and user confusion) to emerge. Example (valid as of 2011/07/02 12:24):

Directory Listing Denied

This Virtual Directory does not allow contents to be listed.