Messages in this thread | | | Date | Thu, 12 Nov 2009 11:09:49 +0000 | From | Alan Cox <> | Subject | Re: Reading /dev/mem by dd |
| |
On Thu, 12 Nov 2009 00:12:09 -0200 Henrique de Moraes Holschuh <hmh@hmh.eng.br> wrote:
> On Wed, 11 Nov 2009, Robert Hancock wrote: > > I don't think that we prevent any access to device registers in > > /dev/mem - if you read something that has side effects and something > > breaks, well I guess you get to keep both pieces :-) There's a > > reason it's root-only.. > > We should. Imaging /dev/mem is one of the oldest tricks in the book of the > forensics people, they do it to live systems to help track down WTF happened > to a compromised host. This kind of crap bites them hard.
Any forensics person who images /dev/mem needs to go back to school.
Alan
| |