Merry Christmas to all of our readers from the F-Secure weblog staff!
Our Christmas greeting this year shows the payload of one of the first computer worms ever: CHRISTMA EXEC from 1987. This was a REXX worm affecting IBM mainframes. This pictures is taken from an excellent write-up of the worm which is available on IEEE's web pages. Authors of the article include the almost-legendary Steve White and David Chess from IBM.
So happy holidays. There will be four of us here at F-Secure monitoring the situation over the Christmas.