Last time we tested security software providing any kind of a solution on the x64 platform. The test left some uncertainty regarding the extent of compatibility. In this additional test we make sure about compatibility. For anti-virus programs containing both 32- and 64-bit codes it is very important to know what they are actually compatible with. On the level of processes shown by the Task Manager we saw only 32-bit processes in case of all four products; we merely believed and supposed the existence of 64-bit components, operating in deeper layers. In case of security software caution is essential; we can only take protection for granted if we also make sure of the factors that are plausible or presumable.

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