Anti-Virus Comparative - Performance Test (Internet Security Products) – October 2014 www.av-comparatives.org
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Notes and comments
The on-access/real-time scanner component of anti-virus software runs as a background process to
check all files that are accessed, in order to protect the system continuously against malware threats.
For example, on-access scanners scan files as soon as they are accessed, while (e.g.) behaviour-
blockers add a different layer of protection and monitor what the file does when it is already execut-
ed/running. The services and processes that run in the background to do these tasks also require and
use system resources. Suite products usually have a higher impact on system performance than anti-
virus-only products, as more services/features are included and running in the background.
Security products need to be active deep in the system in order to protect it, e.g. to scan processes
and so on that are already active during the system start-up, to identify rootkits and other malware.
Those procedures add some extra time and thus a delay in system boot/start up.
If a product takes up too many system resources, users get annoyed and may either disable or unin-
stall some essential protective features (and thus considerably compromise the security of their sys-
tem) or may switch to security software that is less resource-hungry. Therefore, it is important not
only that anti-virus software provides high detection rates and good protection against malware, but
also that it does not degrade system performance or trouble users.
While this report looks at how much impact various Internet security products have on system perfor-
mance, it is not always the security software that is principally responsible for a slow system. Other
factors also play a role, and if users follow some simple rules, system performance can be improved
noticeably. The next sections address some of the other factors that may play a part.
A few common problems observed on some user PCs:
- Old hardware: If a PC already runs at a snail’s pace because it has ten-year-old hardware, us-
ing modern (security) software may make it unusable.
o If possible, buy a new PC that at least meets the minimum recommended requirements of
the software you want to use. Multi-Core processors are preferable.
o Adding more RAM does not hurt. If you use Windows 7 or Windows 8, you should use a
minimum of 4GB of RAM. If you use Windows XP or Vista, switch to Windows 7 or Windows
8.1 64-Bit.
o Make sure you have only ONE security program with real-time protection. If your new PC
came with a trial security suite, remove this before installing a different protection pro-
gram.
- Keep all your software up-to-date: Using an anti-virus version from e.g. 2012 may not pro-
tect you as well as the newer version would, even though you may still be able to update the
signatures. Please visit
http://update.microsoft.com
regularly and keep your operating system
up-to-date by installing the recommended patches. Any software can have vulnerabilities and
bugs, so keep all the software installed on your PC up-to-date: this will not only protect you
against many exploits and vulnerabilities, but also give you any other application improve-
ments that have been introduced.
(48 pages)
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