What is malware?
Kurt “CyberGuy” Knutsson explains how to protect yourself from malware and ransomware.
When it’s time to upgrade to a new computer, the excitement can be eclipsed by anxiety about whether you’ll be able to transfer your existing data without introducing unwanted viruses or malware. Philip of Troy, Michigan, shares this concern and asks how best to ensure a smooth transition.
“When purchasing a new computer, what is the best way to prevent transferring viruses and malware from the old computer to the new one?”
Transferring data from an old computer to a new one can be a daunting task, especially if you want to ensure a smooth and secure transition. Luckily, there are some effective ways to protect your data and prevent the spread of malicious software during the upgrade process.
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A woman who appears stressed looking at a laptop screen (Kurt “Cyberguy” Knutson)
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1) Scan the file
Before transferring any data from your old computer to your new one, it is important to thoroughly scan your files with a trusted antivirus program. This step is essential to identify and remove any viruses, malware, or other malicious software that may be present on your old system. Antivirus program It is designed to detect and eliminate many different types of threats, including viruses. worm, Trojan Horse, Spyware and Adware.
Running a full system scan thoroughly checks your files for known threats and allows you to quarantine or remove any malware that is detected. It is important to keep your antivirus software up to date because new threats are constantly emerging and outdated definitions may not detect the latest malware variants. Most antivirus programs offer automatic updates to ensure you have the latest virus definitions and protection.

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2) Backup and rescan
After running an initial scan and removing detected threats, transfer your important files and data to an external storage device (e.g. External Hard Drive or USB Flash DriveThis backup acts as a precaution in case any issues arise during the transfer process or if additional threats are discovered later. Once you have created a backup, we recommend that you run another scan on the backed up files.
This redundancy ensures that any potential threats that may have been missed during the initial scan are detected and removed before your data is transferred to the new computer. Scanning your files twice greatly reduces the risk of inadvertently transferring a virus or malware to the new system, providing an extra layer of protection for your data.

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3) Use Windows Backup or Time Machine
If you are a Windows user, you can use the built-in Windows Backup A feature that creates a comprehensive backup of your files, folders, settings, and preferences that can be saved to an external hard drive or network location, making it easy to restore your data and settings to a new computer.
For Mac users, the Time Machine feature serves a similar purpose. Time Machine automatically Backing up filesYou can back up your Mac’s data, applications, and system settings so you can restore your data to a previous state or transfer it to a new Mac. These built-in backup solutions not only simplify the process of transferring your data and settings to a new computer, they also provide an extra layer of protection against potential data loss or corruption.

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4) Avoid booting the infected system
If you suspect that your old computer may be infected with malware, it is important to avoid booting into the old system’s operating system during the transfer process. Booting from an infected system can spread malware to any connected devices or storage media, including your new computer. Instead, consider using a clean bootable USB thumb drive or a live operating system environment, such as a Linux live CD or USB, to access and transfer your data.
These bootable media are designed to run independently of your computer’s hard drive, providing a secure, isolated environment for data transfer. By avoiding booting from a potentially infected system, the risk of transferring malware or viruses to your new computer during the data migration process is greatly reduced.

Woman working on a laptop (Kurt “Cyberguy” Knutson)
5) Protect sensitive data with encryption
While encryption alone cannot prevent the transfer of malware, it can add an extra layer of security to sensitive information during the data migration process. File Encryption This includes confidential or personal data such as financial documents, personal records, and business-critical information.
- Windows users: You can enable BitLocker Drive Encryption or use a third-party encryption tool. BitLocker is a[設定]>[バージョン情報]You can access it from here.
- Mac users: Take advantage of FileVault, Apple’s built-in encryption feature in macOS.
Encryption converts data into a coded format that can only be accessed with a specific key or password, making it unreadable to unauthorized parties. This measure protects sensitive information from potential data breaches and unauthorized access, even if files are accidentally transferred with malware.
However, it is important to note that encryption alone does not prevent malware from being transferred along with the encrypted files. Malware can infect encrypted files, and decrypting those files on the new computer can spread the malware. Therefore, to minimize the risk of malware being transferred during the computer upgrade process, encryption should be used in conjunction with other security measures, such as thorough scanning, cleaning, and secure file transfer methods.

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6) Update your antivirus software
It’s important to keep your antivirus software up to date to maintain effective protection against the latest threats. Antivirus companies regularly release updates with new virus definitions, improved scanning engines, and enhanced security features to combat new malware and cyberthreats.
Before transferring your data to your new computer, make sure your antivirus software is fully updated on both your old and new systems. This step ensures up-to-date protection against known threats and reduces the risk of transferring undetected malware during the migration process.
Additionally, we recommend that you schedule regular updates and scans on your new computer to maintain ongoing protection against potential threats. Many antivirus programs have automatic update and scanning capabilities, making it easy to keep your system safe without manual intervention. We’ve handpicked the winners of the best antivirus protection of 2024 for Windows, Mac, Android and iOS devices.
By following these steps, you can significantly reduce the risk of transferring viruses or malware from your old computer to your new system, ensuring a smooth and safe transfer of your data and files.

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Important points about the cart
Transferring your data to a new computer doesn’t have to be a risky undertaking. By following these steps, you can greatly reduce the chances of introducing a virus or malware. Remember, no method is completely foolproof, but diligence and using reliable tools are key. Antivirus software They can provide you with strong protection, and if the process seems too overwhelming, don’t hesitate to seek professional help. If you take these precautions, you can enjoy your new computer with peace of mind, knowing that your data is as safe as possible.
Have you ever experienced data loss or corruption during a computer migration? What lessons did you learn from the experience? Cyberguy.com/Contact Us.
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