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Jean-Marie Mineau 2025-08-12 18:43:28 +02:00
parent 94d26973d3
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4_class_loader/4_in_the_wild.typ
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@ -106,7 +106,16 @@ We investigate later in @sec:cl-malware the case of malicious applications.
image(
"figs/redef_sdk_relative_min_sdk.svg",
width: 100%,
alt: ""
alt: "
A bar graph.
The y-axis represents the number of classes, from 0 to over 40,000.
The x-axis represents the version number of the first SDK containing the class up to version 34.
The bars can have two possible colors: in red, the classes introduced before the Min SDK of their APK, and in green, the classes introduced after the Min SDK of their APK.
In practice, for one value of the x-axis, almost all bars have only one color: the bars before SDK 17 are red, and the ones after are green (except for SDK 24, which has a very small portion of red).
There are only 3 visible red bars, one for SDK version below or equal to 7 at around 30,000 classes, and two smaller ones around 5,000 classes at SDK 8 and 16.
There are more green bars. SDK 21 and 30 are around 20,000 classes, 23 is at 30,000, 31 at 35,000, 26, 28, 29 are at 40,000, and 24 is well over 40,000.
The remaining bars are between 0 and 5,000.
"
),
caption: [Redefined SDK classes, sorted by the first SDK they appeared in.]
)<fig:cl-classes_by_first_sdk>