Realtek Semiconductor Corp. driver update for Realtek AC'97 Audio
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Filename
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Looks like a HARDWARE ID from Realtek
Security breach
According to the comprehensive analysis released by Symantec in 2011 regarding the Stuxnet virus,[6] Realtek's digital certificate for Windows was compromised, allowing attackers to digitally sign malicious drivers without users being notified. The certificate was then revoked by Verisign: "The attackers would have needed to obtain the digital certificates from someone who may have physically entered the premises of the two companies [Realtek and JMicron] and stole them, as the two companies are in close physical proximity." states the report.[6]
https:// en.wikipedia.org/wiki/Realtek
FILENAME IS AN
UPDATE IDENTIFIER FROM MICROSOFT
875F2639-359D-43A8-BB00-1F0760D92AC8