Digital Cameras leave digital 'fingerprint'

[daveyuk]

Have a read of this.

Mods and admins can this be moved into the News section??

http://www.techweb.com/wire/security/186701301

[Arkady]

Security expert Bruce Schneier, writing on his blog, points out one potential weakness of the method. "There's one important aspect of this fingerprint that the article did not talk about: how easy is it to forge?" Schneier wrote. "Can someone analyze 100 images from a given camera, and then doctor a pre-existing picture so that it appeared to come from that camera?"

That's the tricky bit - it won't be long in that little arms-race either...

[SammyC]

Good point Rob.

[fingerz]

Does that hold up even after processing shots in Photoshop etc?

I'd doubt it but the article didn't say. I realise most paedos don't tend to do a lot of post-processing on their shots but still...

[Glen]

I could be wrong on this (normally I am) but i was told some time last year that photoshop does some form of digital tag on your images thats hidden away, not the exif etc..This as far as I know stores things like your serial number and possibly your machine details ie IP address etc..
As I said not 100% on this, don't know if anyone can confirm???

[Pook]

I can't see that being true tbh.

[leoedin]

the thing is, it may be in the PSD's, but the moment you resize or change in another program, that tag would be gone.

Leo