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On top of that, macro viruses work for both PC and Mac, which makes them even more attractive to bad actors. Macro viruses embed themselves in apparently harmless text documents and spreadsheets, and from there they infect other documents, replicate themselves in various ways, send emails, or even perform more catastrophic damage, like formatting hard drives. The Melissa virus was so destructive that its creator later served time in prison for his work.

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Melissa virus was distributed via email attachments, and it quickly became the most rapidly spreading virus of its time, inspiring future mass-mailing types of malware. First appearing in 1995, they didn’t start gaining global popularity until 1999, when the Melissa virus showed up. Macro viruses have been a security nightmare for years. Since macros from the internet have been blocked by default, we've seen different criminal groups trying out new malware delivery mechanisms.












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