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- From: sbonds@jarthur.Claremont.EDU (007)
- Newsgroups: comp.virus
- Subject: Re: How good is Norton Antivirus? (PC)
- Message-ID: <0006.9211161950.AA15221@barnabas.cert.org>
- Date: 13 Nov 92 21:51:16 GMT
- Sender: virus-l@lehigh.edu
- Lines: 106
- Approved: news@netnews.cc.lehigh.edu
-
- I orignally tried to E-mail this, but the mailer here doesn't know
- about ".dk" as a domain name.
-
- you write:
- >How does Norton Antivirus compare to other virus programs, such as
- >F-prot and Vscan, apart from that Norton is commercial? Norton is
- >almost never mentioned here. Is that because it is commercial or
- >because the other programs are better?
-
- It's because the others are better. :)
-
- >scanner". It must be possible to give some unbiased measures of an
- >antivirus program, such as
- >Approximately how many viruses does it detect? Does it detect all the
- >"important" viruses? How often is it upgraded?
-
- It is very hard to give an "unbiased" measure of an antivirus program.
- Even the number of viruses detected is hard to measure. How do you
- tell whether two closely related viruses are "different"? Even
- discerning whether two infected programs are infected with different
- viruses is a subjective judgement.
-
- The frequency of upgrading is important, and easiy measured.
- Generally speaking, commercial programs are upgraded less frequently,
- due to the costs of new packaging, distribution, and removing the
- "old" version from the shelves. Shareware has the definite advantage
- here since it has no packaging, and it is especially simple to remove
- the old product from the "shelves".
-
- Other possible determinations to think about:
- + How does it detect new/unknown viruses?
- + Is it easy to use? How well does it cope with users who might not know
- what they're doing?
- + How much does it cost?
- + Does it offer advice on how to "properly" detect/remove viruses?
- + Does it include a TSR scanner so frequent scanning of the entire drive is
- not needed?
-
- Currently NAV is not highly regarded by independent "experts" such as
- Vesselin. He checks many, many scanners and is probably the best
- source for impartial review. Many of the other experts market their
- own products, so they may be biased in their own favor.
-
- Some of the programs I'm biased in favor of:
- + F-prot
- Not only can it detect virtually all known viruses, it also detects many
- unknown viruses. It includes a TSR to catch viruses before they can
- spread. It carefully identifies any virus before trying to disinfect it
- from a file. Best of all it's free for users on their own personal
- computer at home. $1 US per CPU otherwise.
- + Integrity Master
- While this program is a poor virus scanner in and of itself, it is very
- useful as an integrity checker to catch anything that might wiggle its
- way through F-prot.
-
- Some of the programs I'm biased against: (Please note that these are
- not necessarily reviews of the most recent scanners available. Once I
- find a product I don't like, I usually don't go out and buy a new copy
- just to see if it's still as bad as before...;-)
-
- + SCAN
- McAfee associates consistently refuses to adequately upgrade their
- scanner. Many people have noted problems (bugs, missed viruses, etc.)
- that reappear version after version. One serious problem with CLEAN is
- it doesn't check to see if the virus you are asking it to disinfect is
- even present. If you enter the wrong thing, it will trash the program.
- Sometimes SCAN will mis-identify a virus, and the same thing happens.
- SCAN's virus naming strategy is also cryptic at best, and changes from
- version to version.
- + CPAV
- CPAV does not coexist well with other antivirus programs. It gives false
- positives, and misses many viruses. It is a complete pile.
-
- Anyway, I hope this helps you out some. While it is not possible to
- give "unbiased" information about scanners, the above is what my
- experience has told me.
-
- What I'd like to see in a scanner:
- + A notice advising the user that booting from a clean floppy is a good
- idea if the program is run from the HD.
- + A notice telling that user that disinfection can result in file damage,
- and many times the program will be changed even if it still functions.
- + A uniform naming sceme, such as CARO. Maybe just a command line switch
- to turn on CARO naming versus the "standard" proprietary naming schemes.
- + A database of viruses detected and what they do, even just detailing the
- mode of infection. More info would be nice, tho. (F-prot is pretty
- good about this, although it would also be nice to know where in the file
- or disk the viral code lies.)
- + The ability to allow the user to add new scan strings, including the use
- of wildcards. (F-prot does this w/o wildcards.)
-
- What I'd like to see in an integrity checker.
- + Integrity data kept off the hard drive, or in a single file on the hard
- drive.
- + Option to tell the program never to check certain files, such as Stacker
- volumes which will almost always show up as changed.
- + The same "clean boot" notice as above.
-
- What do all you developers think? Any of these reasonable?
-
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