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It has been reported that between 500,000 and 1 million computers worldwide have been infected with software that can steal users’ bank details and files, and then hold them to ransom.
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British investigators along with the FBI have been working to discover the hackers behind this cyber-attack and the have managed to temporarily disrupt the botnet system being used. However, the UK’s National Crime Agency warns that the system could be working again in just two weeks’ time.
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As a result, the NCA is urging people to take advantage of this two-week window to protect themselves against the two pieces of malware involved in this attack – GOZeuS and CryptoLocker.
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Both tend to infect computers through email attachments or links. The NCA warned that these emails “may look like they have been sent by genuine contacts and may purport to carry invoices, voicemail messages, or any file made to look innocuous".*
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If GOZeuS (also known as P2PZeuS) is downloaded, it monitors all computer activity and looks to capture personal information, such as bank details. If this malware alone is unprofitable, then CryptoLocker is activated. This will lock a user out of their files and threaten to permanently delete them unless a payment is paid – usually of several hundred pounds. It will provide a countdown timer when doing so, pressuring the victim further.
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In the first two months of these attacks, around 234,000 machines were affected, bringing the hackers an estimated $27million or £16million (according to the US Justice Department).
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In the UK, over 15,500 computers are currently afflicted and many more are likely to be at risk.*
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However, the current two-week window provides people with a valuable opportunity to protect their files and personal information. Firstly, people are advised to ensure that they have antivirus software installed and that it has been updated. You should run scans and check that your computer’s operating system and all apps are up-to-date as well. You should also make sure that all of your files, photographs and videos have been backed up and saved elsewhere – such as on a separate hard drive or memory stick.*
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It is not just individuals who are at risk – businesses should also take note of this cyber security threat. Any computer can be infected, and private business information can be incredibly valuable. Ensure that all internet enabled devices, both personal and company owned, have up-to-date operating systems and security software. You should also encourage all employees to be particularly vigilant with their emails and refrain from opening anything suspicious, particularly in unsolicited emails.*
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For more information on cyber-security and how to keep your computer safe, please visit Knowthenet’s Online Safety page.
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