Watch out for ransomware pretending to be a windows update! 

News and Blogs

5th October 2023

Imagine you’re working away on your PC and see a Windows update prompt. Instead of ignoring it, you take action. But when you install what you think is a legitimate update, you’re infected with ransomware. 

Cybercriminals are constantly devising new ways to infiltrate systems. They encrypt valuable data, leaving victims with difficult choices. One such variant that has emerged recently is the “Big Head” ransomware.  

The big head ransomware deception.  

Big Head ransomware presents victims with a convincing and fake Windows update alert. Attackers design this fake alert to trick users. They think that their computer is undergoing a legitimate Windows update. The message may appear in a pop-up window or as a notification. The deception goes even further. The ransomware uses a forged Microsoft digital signature. The attack fools the victim into thinking it’s a legitimate Windows update. They then unknowingly download and execute the ransomware onto their system. From there, the ransomware proceeds to encrypt the victim’s files. Victims see a message demanding a ransom payment in exchange for the decryption key.  

Here are some strategies to safeguard yourself from ransomware attacks like Big Head:  

Keep software and systems updated  

Big Head ransomware leverages the appearance of Windows updates. One way to be sure you’re installing a real update is to automate.  

Verify the authenticity of update  

Genuine Windows updates will come directly from Microsoft’s official website or through your IT service provider or Windows Update settings.  

Backup your data  

Regularly back up your important files. Use an external storage device or a secure cloud backup service. Backups of your data can allow you to restore your files without paying a ransom.  

Use robust security software  

Install reputable antivirus and anti-malware software on your computer.  

Educate yourself and others  

Stay informed about the latest ransomware threats and tactics. Educate yourself and your colleagues or family members.  

Use email security measures  

Put in place robust email security measures. Be cautious about opening email attachments or clicking on links.  

Enable firewall and network security  

Activate your computer’s firewall. Use network security solutions to prevent unauthorised access to your network and devices.  

Disable auto-run features  

Configure your computer to disable auto-run functionality for external drives.  

Be wary of pop-up alerts  

Exercise caution when encountering pop-up alerts especially those that ask you to download or install software. Verify the legitimacy of such alerts before taking any action.  

Keep an eye on your system  

Keep an eye on your computer’s performance and any unusual activity. If you notice anything suspicious, investigate immediately.  

Have a response plan  

In the unfortunate event of a ransomware attack, have a response plan in place. Know how to disconnect from the network. Report the incident to your IT department or a cybersecurity professional. Avoid paying the ransom if possible.  

Get in Touch: 

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