Monocultures and Document formats: Dan’s Bomb Goes Off
Dan Geer is an extremely well respected security expert. When he worries about something, people listen.
One of the things he has worried - and warned - about is the danger represented by IT "monocultures" - the situation that arises when everyone uses the same software, for example, and therefore everyone shares the same vulnerability to a computer virus or other security threat.
Just as the word "virus" has been borrowed from biology and provides an apt and vivid descriptor for its IT analogue, so also does the word monoculture function: think of the consequences of Irish potato blight, or of the wiping out of the American Chestnut tree, which once numbered in the billions in the forests of the American East and is almost extinct as a mature species.
Well, last November, Dan wrote a perspective piece for CNETnews.com, called Massachusetts Assaults Monoculture. In that article, he wrote:
As a matter of logic alone: If you care about the security of the commonwealth, then you care about the risk of a computing monoculture. If you care about the risk of a computing monoculture, then you care about barriers to diversification. If you care about barriers to diversification, then you care about user-level lock-in. And if you care about user-level lock-in, then you must break the proprietary format stranglehold on the commonwealth. Until that is done, the user-level lock-in will preclude diversification and the monoculture bomb keeps ticking.
As it happens, Dan's bomb went off a few days ago, with the breakout of the "Backdoor.Ginwui" virus, a malicious bit of code that Symantec introduced in an alert as follows:
It has been reported that Backdoor.Ginwui may be dropped by a malicious Word document exploiting an undocumented vulnerability in Microsoft Word. This malicious Word document is currently detected as Trojan.Mdropper.H.