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I'm afraid that NO AV will protect you 100% if you are 'unlucky' or
not careful.
I recently got a RARE email spam that was clearly a link to an
infected file. I downloaded the file and alerted the compromised
server admin.
Now here it is 3 weeks later, and at least 15 AV's still do not
recognize it. Among them some majors.
Backing up your system to a clone drive regularly, is the only true
defense. Back up your personal files a few times a week to a DVD or
offsite source.
--- In amibroker@xxxxxxxxxxxxxxx, Yuki Taga <yukitaga@xxx> wrote:
>
> Hi Alex,
>
> Sunday, February 25, 2007, 2:50:29 AM, you wrote:
>
> d> A word of advice ... you get what you pay for!
>
> An oft-quoted aphorism ... that is correct ... about as often as it
> is not. ^_^
>
> d> I used to use Avast and managed to get a nasty Trojan that wrecked my
> d> operating system.
>
> I've been using Avast for years now. Never a problem.
>
> The truth is, pay-ware or free-ware, there is no way *any* antivirus
> program can completely protect you from malware.
>
> It's exactly like a moving average: There is some lag.
>
> Yes, most of the antivirus programs now have some form of heuristics,
> which attempts to identify malware on some basis *other* than
> comparing to a known-malware signature database. But nothing has
> proved perfect so far, and you can set your level of heuristics
> detection so high that you are bothered by endless false positives.
>
> Avast often updates virus definitions two, sometimes even three times
> a day. It's not like they are exactly sleeping.
>
> Moreover, one does not just 'manage' "to get" nasty Trojans. Almost
> everything out there requires user interaction, or visiting a
> dangerous Web site with defenses down or non-existent, or with a
> machine that has already been compromised. If you can get a nasty
> Trojan with Avast, I'll wager you can get one with F-Secure, too.
>
> The best defense against all of this stuff is between the chair and
> the keyboard. (I'm convinced that I could run with only my NAT
> router as a defense -- no firewall, no antivirus -- and I'd probably
> never have a problem, simply because I'm pretty careful.)
>
> FWIW, I'd be interested to know:
>
> 1) how you identified what you got (the name, too)
>
> 2) how you first noticed you that you got it (the symptoms)
>
> 3) if you had any backup plan in force that would result in you
> having had a clean image to restore
>
> I often suspect (even though I know it's really a low probability)
> that antivirus programmers have a "black staff" that writes attacks,
> too. ^_^
>
> "Yes, our program knows about that one; too bad yours was apparently
> behind the curve."
>
> None of them catch all the newest attacks. None of them. I'm sure
> F-Secure is a fine product. But beware, there are none out there
> that will let you simply treat your computer as "locked-down". You
> will need to think about how you got that Trojan, and what behaviors
> you may need to change to avoid getting another one.
>
> Best,
>
> Yuki
>
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