Since I am a happy user of Avira, the free version, that keep me safe all these years, I quite intrique with the news about Avira Free Antivirus didn’t detect CIH/Chernobyl varian.
The Avira tech people explained that a CIH infection is pretty unlikely. None of the variants work on modern operating systems ( last supported OS was win 98 ). Also the CIH Bios infection is actually a destructive function, not with the aim of keeping the virus active, but to render the system unbootable.

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