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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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