Ransomware Spreads Across The Globe: How To Protect Your Computer

A ransomware worm is rapidly taking over computers around the world. Here’s what you need to know to protect your computers and networks.

This particular worm, known by several names including WannaCry and WCry, is a type of computer virus called ransomware. Ransomware, as regular Tech Tips readers know, is especially nasty because it hijacks your computer and encrypts your data, then demands a ransom to decrypt it. A worm is a virus that worms its way through computer networks. Therefore, as you can imagine, a ransomware worm has the potential to wreak havoc worldwide. And that’s exactly what WannaCry and its variants are doing.

Your best protection is prevention. While this virus can be removed, the data it encrypts CANNOT be decrypted. Experts typically recommend not paying the ransom, as there is no guarantee you will recover your data even if you do. A current offline backup is the only way to preserve your information in the event of a ransomware attack.

Windows users, update NOW. If you’re on an old version of Windows and can’t update (anything except Win7, Win8.1, and Win10), this is your wake-up call to upgrade to a newer version. Yes, they released an XP patch. No, that doesn’t mean XP is safe. It means they had to patch XP because it’s used so widely in critical environments like hospitals. And that was an unprecedented move, as Microsoft had previously declared that XP would receive no further security updates. That indicates how serious the situation is. Microsoft has more information about supported versions of Windows on their Windows end-of-support page.

And, everyone – BACK UP YOUR DATA. Seriously. Back it up. Right now. Mac users, you too, you’re not immune to ransomware. Everybody BACK UP YOUR DATA ON A SEPARATE NON-NETWORKED DRIVE AND KEEP IT OFFLINE.

RIGHT. NOW. (Here’s my latest Tech Tips article on backups for Windows and Mac.)

Spread the word. Tell everyone: business associates, friends, family, neighbors, random strangers. Send them a link to this article and remind them to back up and update their computers immediately.

If you’ve already been affected by the WannaCry worm, here’s some information that can help.

Ransomware: A Dangerous Threat To Your Computer

Computer SecurityRansomware is a particularly nasty form of computer virus that encrypts your data, then demands an electronic ransom for the encryption key. Why is ransomware so hazardous, and how can you remove it?

Ransomware is vicious because it doesn’t just render your computer unusable. It encrypts all of your files, including those on networked computers, removable drives, and server volumes. To get the key to unlock the encryption, cyber-criminals demand that you pay. Ransomware has decimated businesses and consumers alike. It’s been around on Windows for ages (see my writeup of Cryptolocker from a few years ago), but recently the first Mac-based ransomware has appeared in the wild.

Should You Pay?
There’s some debate amongst computer security experts as to whether it is better to pay the ransom or not. Sophos’ Naked Security blog has a good overview of the discussion. They also have an excellent article on what you can do if you are infected by ransomware.

How To Avoid Ransomware
You are far better off avoiding ransomware in the first place. Start by making sure you have multiple sets of known good backups. A clean backup is one of your best protections against ransomware and other viruses. Below you’ll find my guide on backup options for Windows and Mac, including how to test your backups to make sure they work when you need them.

All of my usual security recommendations apply as well. Use a top-quality antivirus program, and keep your computer up to date. If you’re on an obsolete version of Windows or Mac, now’s the time to upgrade. Check your default security settings, and use strong, unique passwords on every site.

Here are some Tech Tips articles to help. You can also sign up to receive Tech Tips by email and follow Tech Tips on Facebook for the latest tech support advice for Windows and Mac.

How To Back Up Your Computer (For Windows And Mac)

How To Create Strong Passwords (2016 Edition)

How To Configure Security Settings For Windows, Mac, iOS, and Android

Security Basics For Mac Users

How To Protect Your Web Browser