New Malware Can Permanently Destroy Your Computer Files

Microsoft has discovered a dangerous new malware called GigaWiper. Unlike typical viruses that steal information or hold files hostage for ransom, this one is designed purely to destroy. It combines three older destructive programs into one package, giving attackers multiple ways to permanently damage a computer. They can choose to wipe the entire hard disk, overwrite just the Windows drive, or run fake ransomware that encrypts files but never saves the key needed to unlock them. This malware appears to target specific organizations rather than random home computers. Microsoft has not indicated that everyday family computers are currently at risk from GigaWiper. However, the techniques used in this malware could eventually be adapted for broader attacks. The fake ransomware feature is particularly concerning because victims might pay a ransom thinking they can recover their files, when in reality the files are permanently destroyed.

To protect your family computers from destructive malware like this:

1. Back up your important files regularly to an external hard drive that you disconnect when not backing up, or to a cloud service like Google Drive, OneDrive, or iCloud.
2. Keep Windows updated by going to Settings, then Update & Security, and installing all available updates.
3. Use Windows Security (built into Windows 10 and 11) or another reputable antivirus program and keep it active.
4. Do not click on email attachments or links from people you do not know. The most important protection against destructive malware is having backups stored separately from your computer. If malware wipes your hard drive, a backup copy stored elsewhere means you can restore your photos, documents, and other irreplaceable files. Make backing up a monthly habit, like checking your smoke detector batteries.