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No single antispyware catches everything. Different ones have
different strengths. Here are a few suggestions:
For preventative, real-time protection, one of the known best is
Spyware Terminator. It used to have the dark cloud of "rogue
antispyware" reputation hanging over it, but that cloud has been
lifted. While TechSupportAlert.com says Windows Defender's overall
detection rate is slightly higher, it does plainly say that Spyware
Terminator is much stronger when it comes to preventing infection in
the first place.
Another product that I have found to be quite effective is
CyberDefender. This is another product that was on probation at
Spyware Warrior, and in fact some scanners will still detect its
SpyBlocs components as adware, but Eric Howes (editor of SW) has
informed me that these items are in fact legitimate.
CyberDefender is not just antispyware. It also has antivirus,
anti-spam, and anti-fraud in an all-in-one "seamless" unit that is
supposed to be fully compatible with an existing, conventional
antivirus on your machine. But as I've posted in a few other threads,
I see no need for it. I recently replaced AVG Free antivirus and
Windows Defender with this product, and have no longer needed to
manually scan for spyware since then.
CyberDefender's method of learning works in a way similar to that of
class-leading HIPS product Novatix Cyberhawk (the clients are the
threat sensors), and they've found a way to continue offering this
product for free by placing unobtrusive ads in the console window, and
eliminating virtually all distribution bandwidth costs by delegating
updating responsibilities between peers. The client that detects a new
threat gets updated first (usually within an hour, before most
outbreaks are even over), which in turn uses its own local bandwidth
to update a number of its peers, which in turn update more peers, and
so on. This creates much less strain on a single Internet connection,
allows updates to be distributed faster, and again, saves the company
a lot of money.
Either of the two products I've mentioned above will protect you from
most threats, but you should never assume your computer is clean just
because one scanner says it is. You should also have at least one
on-demand scanner on hand. The two I recommend most are AVG
Anti-Spyware Free and a-squared Free. These are both competent at
detecting spyware, but they were originally designed to detect malware
especially (Trojans, backdoors, etc.) According to Andreas Clementi's
AV-Comparatives (AT-Comparatives, in this case), these are the top two
anti-Trojan scanners. They are also the only two in the competition
that offer free on-demand scanners.
Another recommendation is for you to run an online scanner or two from
time to time. Trend Micro HouseCall and Panda ActiveScan are two of
the best, but there are many more.
Hope this helps!
(nota: ho aggiunto collegamenti a prodotti per una migliore lettura / ricerca)