Web Hosting Talk : Other Forums : Web Hosting Lounge : I suspect steganography.

[Homeblock]

I run a free image hosting service and one user has 205 images totaling over 350 megs. Each image is 100x100 and between 1.43MB and 1.91MB. They are .jpg format seemingly.

I don't see how this is possible under any quality with JPG. I have some experience with tracking down stego but if anyone would mind taking a look at these images please PM me.

[RajanUrs]

100x100 mm or pixels ?

Over 1MB size is too weird for both sizes.

[bear]

It's my understanding that steganography does not add to the file size, but instead uses "slack" space or contiguous colored pixels to store info.

[Homeblock]

You are correct but I do recall some size discrepancies when I studied this field.

[Aea]

I did believe that size was increased 8 times for typical applications =)

[Acroplex]

What are you doing spying on a user's data in the first place? Did they consent to that upon signing up?

[N9ne]

Originally posted by timechange.com
What are you doing spying on a user's data in the first place? Did they consent to that upon signing up?

What if the user is abusing the system?

[Xshare]

Originally posted by timechange.com
What are you doing spying on a user's data in the first place? Did they consent to that upon signing up?

actually, this is common among image hosts. Gotta stop Child Porn, regular porn, etc.