There’s no guarantee you can avoid the virus, but this is what you can do:
- Back up your data! This backup cannot be via a network or anything that stays plugged into your computer, since the virus can travel over a network or to a connected device and encrypt/destroy that data too. We recommend an online, offsite backup that supports archiving (keeps multiple copies/versions of each file) such as Jungle Disk, Crash Protect, Carbonite or Mozy.
- Do not open email attachments when you are unsure of the sender or attachment. The CryptoLocker is said to look like shipping info from a legit company, such as Fed-Ex and often looks like a PDF. It may also be a link to a site where the file is located. If you are unsure about an email attachment, just email your sender about any attachments they have included in an email.
- Download and install the “CryptoPrevent” utility. CryptoPrevent is a tiny utility designed to lock down any Windows OS (XP, Vista, 7, 8, and 8.1) to prevent infection by the CryptoLocker malware or “ransomware.” Scroll way down and click the download that says, “CryptoPrevent Installer.” It’s the second blue button.
For more information regarding CryptoLocker, read this link.