If you do not browse dangerously, I wouldn’t scan more than once a month…
Of course, if your computer starts to have any weird behavior, you can scan immediately.
Whilst avast! doesn’t have an anti-rootkit function, it does have a number of rootkit signatures, obviously these have to be detected before the rootkit gets established.
It doasn’t mean it’s unnesesary. I sad it this way because I am tired to whait when Alwil will make next version of Avast! with antirootkits and other features like Heuristic, Self deffence and so and so… :-\
Since most, if not all, of the "Regular" Helpers on these Support Forums
believe in the "Layered" Approach to security, rootkit detection and
possible removal, is BEST left to SPECIALIZED ( "Stand Alone" ) programs.
I do NOT advocate Alwil getting very "involved" in the Rootkit "Sector"
of computer security .
Add me to one of the advocates of the layered defense. Rootkits and trojans in particular (and to a lesser extent, adware) are best defended against by utilities specifically designed for them. Sure, there’ll be some overlap (which never hurts, of course) - any good a-v should be fairly effective in detecting trojans, for instance, but it probably won’t be nearly as effective as a “dedicated” a-t.
I have to agree with Spiritsongs every malware program according to its nature as the anti-malware Bible says: an anti-spyware against spyware, an anti-virus program against virus, an anti-intrusion against intrusions, an anti-trojan against trojans, that is the way layered protection should be. So if you start after rootkits there are specialized proggies to do this on-demand Gmer and hookexplorer for instance and several other. No overbloated do-alls that weigh too heavy on your machines and have their own “blind corners”. Before you know it your firewall program comes with a spyware blocking toolbar or an anti-phishing plug-in. Do you want that? Layered protection and a cocktail of programs, not too much and also not to little, that is my opinion, and my experiece taught me, the best way to go!
I think it’s not a good position, ALL good AV softwares have spetial tools against rootkits, today it’s must have tool I think. About Adwares I can say that I tried many AV’s and Vista Security Center only on Avast! reports that it’s not a anti-adspy application…
List of AV’s who have anti-rootkits and anti-adspy: Kaspersky, Symantec-Norton, NOD32, F-Secure, Avira, Sophos, BitDefender, McAfee… :
Can you explain your position or the position you defend a bit further. I think avast is a versatile product and that is what you are aiming at without outgrowing the original formula. Am I right there?
The original question was whether avast protects against rootkit, and the answer here is: “of course”. My estimate is that nowadays, 30+ percent of malware actually comes with some kind of rootkit (to protect/hide its files), and if we weren’t able to block rootkits, we’d be missing a huge number of malware.
Another question is if avast is able to detect (and more importantly, remove) active rootkits if installed on an already compromised machine. Now, the answer is: “in many cases no”, and that’s indeed where specialized anti-rootkit tools do a better job. That said, I can say now that we’re coming up with a new rootkit detection/removal utility shortly.
Someone said that most AV programs already contain some rootkit detection/removal tool. However, have you actually measured the success ratio of these tools? We have, and the results were quite amazing. Only a handful of the tools is actually doing a decent job. The morale of the story is that if someone says a product “can deal with rootkits” doesn’t actually mean that it’s doing a good job.
While “layered defense” is a good concept, it doesn’t quite work here. The frontiers betwen Trojans, Backdoors, Worms and other types of malware are now so vague that there’s no specialized anti-Trojan, anti-Backdoor or anti-Worm tools anymore. Anti-rootkit tools are a bit different (as they are “heuristic” in their nature, i.e. they search for hidden items, without any need of defitions/signatures), but still, the technology also belongs to AV programs.
If we are confused it is because there is little, rather no information in the virus database other than a malware name, according to the virus database avast detects rootkits, not how.
Try also searching for [Rtk], this will reveal more names.
Anyway, as I already said, a big number of malware nowadays can only be charactererized as “combined” or “blended” threat - i.e. it is a Trojan, it is a Backdoor, it is a Rootkit (and often, it is also a mass mailing worm etc.). So, the way we name it cannot really indicate of it’s a rootkit or not…