Archive for the ‘digital forensics’ Category

The Steganographic Image

February 15, 2017 Leave a comment

It’s the Conspiracy week at the Photographers’ Gallery in London and I was asked to write a short text on what lies inside the image (code). In other words, I wrote a short text on the Steganographic Image, and hiding messages in plain sight, although in this case, encoded “inside” a digital image. The image that tricks, the image that operates behind your back, or more likely, triggers processes front of your eyes, in plain sight, invisible. As I was reminded, this is also an idea that Akira Lippit has in a different context developed through Derrida. To quote Lippit (quoting at first Derrida): ‘”Visibility,” he says “is not visible.” Invisibility is folded into the condition of visibility from the beginning. There is no visibility that is not also invisible, no visibility that is not in some way always spectral.’One would be tempted to argue that this is where this consideration of the visual meets up with the history of cryptography, or ciphering and deciphering. Or as Francis Bacon put it in 1605 in ways part of the longer media archaeology of the steganographic image too: “The virtues of ciphers are three: that they be not laborious to write and read; that they be impossible to decipher; and, in some cases, that they be without suspicion.” It is especially this third virtue that remains of interest when looking at images without such suspicion: the most banal, tedius of pictures; a spectrality that conjurs up hidden passages, triggers and operations.

My short text can be found here online. It’s only scratching the steganographic surface.

A short preview of the text.

Hidden in Plain Sight: The Steganographic Image

Who knows what went into an image, what it includes and what it hides? This is not merely a question of the fine art historical importance of materials, nor even a media historical intrigue of chemistry, but one of steganography – hiding another meaningful pattern, perhaps a message, in data; inside text or an image. This image that is always more than. More than what? Isn’t it obvious from the amount of work gone into art-theoretical considerations of the inexhaustible meanings of the photographic image that it has always been a multiplicity: contexts, fluctuating meanings, readings and the insatiable desire to look at things in order to discover its depths.

As such, a steganographic inscription is neither a depth nor the plain surface but somewhere in between. In contemporary images made of data it refers to how the image can be coded as more than is seen, but also more than the image should do. The steganographic digital image can be executed; it includes instructions for the computer to perform. Photographs as part of a longer history of communication media are one particular way of saying more than meets the eye, but this image also connects to histories of secret communication from the early modern period, to more recent discussions in security culture, as well as fiction such as William Gibson’s novel Pattern Recognition (2003). Were J.G. Ballard’s 1950s billboard mysteries one sort of cryptographic puzzle that hid a message in plain visual sight?

Continue reading – link to full text

The Warhol Forensics

April 27, 2014 6 comments

The news about the (re)discovered Andy Warhol-images, excavated by digital forensics means, has been making rounds in news and social media. In short, a team of experts – including Cory Arcangel – discovered Warhol’s Amiga-paintings from 1985 floppy discs. As described in the news story: ”

“Warhol’s Amiga experiments were the products of a commission by Commodore International to demonstrate the graphic arts capabilities of the Amiga 1000 personal computer. Created by Warhol on prototype Amiga hardware in his unmistakable visual style, the recovered images reveal an early exploration of the visual potential of software imaging tools, and show new ways in which the preeminent American artist of the 20th century was years ahead of his time.” The images are related to the famous Debbie Harry-image Warhol painted on Amiga.

The case is an interesting variation on themes of media art history as well as digital forensics. As Julian Oliver coined it in a tweet:

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The media archaeological enters with a realisation of the importance of such methods for the cultural heritage of born-digital content, but there’s more. The non-narrative focus of such methodologies is a different way of accessing what could be thought of as media archaeology of software culture and graphics. The technological tools carry an epistemological, even ontological weight: we see things differently; we are able to access a world previously unseen, also in historical contexts.

But there is  a pull towards traditional historical discourses. The project demonstrates a technical understanding of cultural heritage and contemporary software culture but rhetorically frames it as just another part of the art historical/archaeological mythology of rediscovering long lost masterpieces of a Genius. This side still needs some updating so that the technical episteme of the excavation, detailed here [PDF] can become fully realised. Techniques of reverse engineering as well as insights into image formats as ways to understand the technical image need to be matched up with discourse that is able to demonstrate something more than traditional art history by new means. It needs to be able to show what is already at stake in these methods: a historical mapping of the anonymous forces of history, to use words from S. Giedion.

Scholars such as Matt Kirschenbaum have already demonstrated the significant stakes of digital forensics as part of a radical mindset to historical scholarship, heritage and media theory and we need to be able to build on such work that is theoretically rich.



Things (even data) are rarely lost

March 14, 2011 2 comments

I am trying to find the irony in writing recently about computer forensics and thinking about the archive in the digital age — and then being the one whose hard drive gets in such a shape it does not boot, and all my analytical eye for computer forensics and media archaeology turns to hours of panicking.

After extensive, non-analytical and very affective panicking, lots of traveling around Berlin for cure and a new Mac, I was able to restore most of my files, with something lost still.

One cannot hence help thinking the words of Matt Kirschenbaum (thanks to Shintaro Miyazaki for reminding me of the quote):

“Thus the cold truth of modern data storage: given sufficient resources — that is, elite technological and financial backing — data can be recovered from media even under the most extraordinary conditions.”

Information is rarely lost, as it is, after all, material and physical. The spinning hard drive tells usually a lot more than our ways of accessing files tell us, and it is on this physical level that the ephemeral has a materiality – even if fleeting, and very time-dependent (both in terms of its durability as well as its operationality as dynamic, in movement).