According the Reuters, two ex-employees told that Kaspersky took this step as it felt that its “smaller” rivals were stealing some technology. They said that the secret campaign targeted Avast, AVG, Microsoft and other rivals. The employees claim that some attacks were ordered by co-founder Eugene Kaspersky himself.
This fake malware fooled them into disabling and deleting important files of users’ PCs. This was done by distorting the important software files on PCs to make it look it like malware and then submitting it to Google’s VirusTotal malware aggregator. These databases are looked up by antivirus solutions to keep up their software up to date. Thus, Kaspersky tricked rivals into identifying important software files as a virus.
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Denying such decade-long secret campaigns, the company told Reuters:
According to the employees, researchers at Kaspersky Labs reverse engineered rival software to produce false positives. As these files looked similar to the originals, Kaspersky was able to trick rivals into identifying important software as malware. Kaspersky researchers produced false positives and uploaded the harmless files to VirusTotal to show how rivals blindly follow its lead. This was confirmed by the fact that within a week and a half, 14 security companies declared Kaspersky’s false positives as dangerous.
Read more about the news here at Reuters.