Ransomware: ‘WannaCry’ guidance for home users and small businesses
16 December 2024, 17:14
The NCSC is aware of a new ransomware variant known as ‘WannaCry’. This ransomware targets computers running Microsoft Windows operating systems and encrypts files, demanding a ransom payment in exchange for decrypting them.
What is ransomware?
Ransomware is a type of malware that encrypts files on a victim’s computer and demands a ransom payment in exchange for decrypting them. Ransomware typically spreads through phishing emails or malicious websites. Once it is installed on a computer, it will encrypt files and display a message demanding payment.
How does ‘WannaCry’ work?
‘WannaCry’ targets computers running Microsoft Windows operating systems. It exploits a vulnerability in the SMB (Server Message Block) protocol, which is used for sharing files and printers over a network. Once ‘WannaCry’ has infected a computer, it will encrypt files and display a message demanding payment in Bitcoin.
What should I do if my computer is infected with ‘WannaCry’?
If your computer is infected with ‘WannaCry’, you should take the following steps:
- Do not pay the ransom. Paying the ransom will only encourage the attackers and fund their criminal activities.
- Disconnect your computer from the internet. This will prevent the ransomware from spreading to other computers on your network.
- Back up your files. If your files are encrypted, you may be able to recover them from a backup.
- Contact a computer security expert. A computer security expert can help you remove the ransomware from your computer and recover your files.
How can I protect my computer from ‘WannaCry’?
You can protect your computer from ‘WannaCry’ by taking the following steps:
- Keep your software up to date. Microsoft has released patches to fix the vulnerability that ‘WannaCry’ exploits. Make sure that you have installed the latest patches for your operating system and software.
- Use a strong antivirus program. A strong antivirus program can help to block ransomware infections.
- Be careful about opening emails and attachments from unknown senders. Phishing emails are a common way for ransomware to spread. Be careful about opening emails and attachments from unknown senders.
- Back up your files regularly. If your files are encrypted by ransomware, you may be able to recover them from a backup.
For more information on ‘WannaCry’, please visit the NCSC website: https://www.ncsc.gov.uk/guidance/wannacry-ransomware
Ransomware: ‘WannaCry’ guidance for home users and small businesses
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