>>>>> "Erik" == Erik Mouw <mouw@xxxxxxxxxxxx> writes: Erik> (sorry for the late reply, just got back from holiday) Erik> On Mon, Jun 18, 2007 at 01:29:56PM -0400, Theodore Tso wrote: >> As I mentioned in my Linux.conf.au presentation a year and a half ago, >> the main use of Streams in Windows to date has been for system >> crackers to hide trojan horse code and rootkits so that system >> administrators couldn't find them. :-) Erik> The only valid use of Streams in Windows I've seen was a virus Erik> checker that stored a hash of the file in a separate Erik> stream. Checking a file was a matter of rehashing it and Erik> comparing against the hash stored in the special hash data Erik> stream for that particular file. So what was stopping a virus from infecting a file, re-computing the hash and pushing the new hash into the stream? You need to keep the computed hashes on Read-Only media for true security, once you let the system change them, then you're toast.... John - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
