Some hackers are exploiting Microsoft’s offer of free upgrades to its new Windows 10 operating system.
Security researchers are warning about a wave of bogus spam emails with malicious attachments, labelled as if they’re legitimate copies of the new program.
The attachments contain a “ransomware” program that, when opened, locks all the data on a computer and demands payment to release them.
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Researchers at Cisco Systems say the emails are designed to look like an official upgrade notice from Microsoft, but several words have random, out-of-place letters and punctuation.
Another important clue: Microsoft says its update mechanism provides computer owners with a notice on their screens – not via email – when a direct Internet download is available. Experts warn against clicking on files that come with unsolicited emails.