What is Ransomware?
Ransomware attacks are a form of malware that is designed to lock a user or organisation out of their files or device. Cyberattackers place users and organisations in a position by encrypting files and demanding a ransom payment to regain access to their files. Some even add additional functionality such as data theft to provide further incentives for ransomware victims to pay.
Ransomware is one of the most dangerous forms of malware to date and one that is spreading rapidly worldwide. The number of users affected by ransomware keeps growing, along with continued increases in ransomware modifications making it a constantly evolving threat.
How is a ransomware attack carried out?
There are several types of ransomware attacks but firstly, they must gain access to a device or network. Upon gaining access this enables them to utilise the malware needed to encrypt or lock a device or data.
Examples of types of ransomware
Malspam
Cyberattackers can use spam to send emails with malicious content such as attachments. Once opened, this gives attackers access to deliver malware.
Malvertising
Malvertising or malicious advertising, is the use of online advertising to distribute malware with no interaction from the user needed. Capturing details of users from their computers and encrypting their device or data.
Spear Phishing
Spear phishing is a more targeted ransomware attack. Targeting a specific company, organisation, or person, these attacks often include information known to be of interest to the target such as events or financial documents to gain interest and furthermore grant them access.
How can I remove ransomware?
Unfortunately, there is very little that can be done if an attacker encrypts your device and demands a ransom. There is also no guarantee that they will unencrypt your device or files whether you pay the ransom or not.
How to protect your device from ransomware?
As we have learnt there is very little that can be done against ransomware which is why it is critical to be prepared. There are two key steps to protect yourself and your device from ransomware:
- Make sure you have security software installed on all devices
- Ensure you have backed up all important data and files
The Covid-19 pandemic has contributed to the recent surge in ransomware. Gaps in security were created as companies and organisations adapted to remote working. Cybercriminals exploited these vulnerabilities to deliver ransomware, resulting in increased attacks.
Now is a good time to protect your business or organisation from ransomware. By installing and updating security software, backing up your data and regular end user training, you can reduce the risk of ransomware.
If you would like to discuss cyber security training, get in touch with our team today!
