disLEXia 3000 blog: EXIF Thumbnail in JPEG images disLEXia 3000 blog Friday, 17. December 2004 EXIF Thumbnail in JPEG images mdornseif, 14:45h At the Aachen Summerschool applied IT security Steven J. Murdoch came up with an automatic way to analyze if the thumbnal in a JPEG file is different from the real image. There was widely discussed incident featuring a topless thumbnail and we wanted to know how widespread this problem is. So we crawled the net for images and used Steven's tools to filter for interesting ones. The tool outputs the main image (left) besides the thumbnail (right). 90% of the rest are cropped images. Sometimes just boring stuff has ben cropped, but on other instances interesting details where removed: Online for 1795 days Last update: 2007.06.23, 11:40 status You're not logged in ... login menu ... home ... topics ... galleries ... blogs.23.nu home search calendar December 2004 Sun Mon Tue Wed Thu Fri Sat 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 November January recent updates You are speaking at our... "We would prefer not to. While we understand your desire... by mdornseif (2007.03.29, 08:18) Going Crazy with Datamatrix http://blogs.23.nu/disLEXia/stories/5751/ (1 von 7)01.06.2008 16:21:40
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disLEXia 3000 blog: EXIF Thumbnail in JPEG images
disLEXia 3000 blog
Friday, 17. December 2004
EXIF Thumbnail in JPEG imagesmdornseif, 14:45h
At the Aachen Summerschool applied IT security Steven J. Murdoch
came up with an automatic way to analyze if the thumbnal in a JPEG
file is different from the real image. There was widely discussed
incident featuring a topless thumbnail and we wanted to know how
widespread this problem is. So we crawled the net for images and
used Steven's tools to filter for interesting ones. The tool outputs the
main image (left) besides the thumbnail (right).
90% of the rest are cropped images. Sometimes just boring stuff
has ben cropped, but on other instances interesting details where
removed:
Online for 1795 days
Last update: 2007.06.23,
11:40
status
You're not logged in ... login
menu
... home
... topics
... galleries
... blogs.23.nu home
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calendar
December 2004
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31
November January
recent updates
You are speaking at our...
"We would prefer not to.
While we understand your
desire...
by mdornseif (2007.03.29,
08:18)
Going Crazy with Datamatrix
http://blogs.23.nu/disLEXia/stories/5751/ (1 von 7)01.06.2008 16:21:40