GameOver Zeus: Removal, detection and how you can protect yourself
Experts are urging computer users to protect themselves against the potentially harmful malware
Internet users have two weeks to protect themselves against the GameOver Zeus and CryptoLocker viruses being used by criminal gangs to extort millions of pounds, US and UK security agencies announced on Monday.
The warning came after the FBI successfully disrupted a major cybercriminal network in the US from using the viruses to infect computers and steal data.
GameOver Zeus, also known as P2PZeuS, was designed by Russia and Ukrainian gangs to find and harness computer files that give access to banking and financial information, while Cryptolocker encrypts all files on a target’s computer and demands the user pays around £300 to unlock the file.
Almost 250,000 computers worldwide have been infected with CryptoLocker since it emerged in April and it has so far been used to extort payments of more than $27m (£16m), according to the FBI.
Industry experts have been quick to back up the stern message from the National Crime Agency, whose advice to visit internet awareness group Get Safe Online's's website led to the site going down for 15 hours.
Below are some methods experts recommend to protect yourself from GameOver Zeus and CryptoLocker, and remove it if you suspect you computer is infected.
Protect your passwords
Unencrypted passwords should not be stored on your computer in case they are found by GameOver Zeus or another similarly aggressive malware programme, recommends Hugh Boyes, the head of the cyber security team at the Institution of Engineering and Technology's (IET).
“If there is a need to store passwords, then use a good password manager application, which backs up and shares with your smartphone or tablet computer.”
A woman uses her laptop in Istanbul.
Set up an 'administrator account'
Boyes also recommends that computer users have two separate accounts on their Mac or PC. One standard account should be for day-to-day use, while an ‘administrator’ account is used to make changes to the machine, like installing software or adding a printer.
By not using the administrator account for browsing the web or accessing emails, computer users can protect themselves from 90 per cent of malware attacks.
Update your computer programmes - especially anti-virus software
The NCA has advised that people ensure their security software is installed and updated, and that they run scans. Users should also check that their computer operating systems and applications in general are up to date.
Microsoft users can do this by using the ‘Check for Updates’ function on Windows Update, while Mac users can choose go to ‘Software Update’ on the System Preferences menu.
Beware of suspicious emails
Do not open email attachments unless you are certain they are authentic. Potentially harmful emails generally have some or all of the following characteristics according the Get Safe Online:
- You don’t know the sender.
- The message contains misspellings (for example using a zero instead of an ‘o’) designed to fool spam filters.
- It makes an offer that seems too good to be true.
- The subject line and contents do not match.
- Contains an urgent offer end date (for example “Buy now and get 50% off”).
- Contains a request to forward an email to multiple people, and may offer money for doing so.
- Contains a virus warning.
- Contains attachments, which could include .exe files.
Change your passwords
Your original passwords may have been compromised by GameOver Zeus and CryptoLocker, and could be used to harvest any important information you store or access on your computer.
Back up your files
All of your files, including photos and documents, should be regularly saved to an external piece of hardware, such as a USB stick or an external hard drive. This means it will not be lost if your computer is attacked, or if it breaks.
The US Government has recommended a number of remediation tools which can be used to remove GameOver Zues. These include: F-Secure (for Windows Vista, 7 and 8, or Windows XP), Heimdal (for Microsoft Windows XP, Vista, 7, 8 and 8.1), and Kaspersky if you fear your computer is infected.
Additional reporting by PA
Life & Style blogs
Airline food across the classes: Ever wondered what the other half are eating?
What do the emoji on Snapchat mean?
A bottle of wine a day is not bad for you and abstaining is worse than drinking, scientist claims
Huawei P8 review: best phones nobody's seen from the biggest company nobody's heard
The busiest Starbucks in the US is also the most secretive - it's where the CIA gets its coffee fix
The only black face in the Ukip manifesto is on the page about overseas aid
If I’m being racially abused I don’t need a stranger with a saviour complex to rescue me
Ukip is the only main political party to not address LGBT rights in its manifesto
Food banks: One million Britons will soon be using them, according to Trussell Trust
BBC election debate: The one photo that summed up the whole 90-minute leaders debate
Religion isn't growing, it is becoming vigorous in its demise, says philosopher AC Grayling
- 1 18th century sex toy found in 'toilet of sword fighting school' in Poland
- 2 US? China? India? The 10 biggest economies in 2030 will be...
- 3 'I wish my teacher knew...': Young students share their 'heartbreaking' worries in notes
- 4 Rebecca Francis accuses Ricky Gervais of using 'influence' to target female hunters after receiving barrage of death threats
- 5 Australian student Tommy Connolly, 23, adopts his pregnant, homeless 17-year-old cousin to give her a chance at 'a better life'
iJobs Gadgets & Tech
£30000 - £40000 per annum + Benefits: Ashdown Group: Front-End UI Application ...
£18000 - £26000 per annum: Recruitment Genius: They work with major vehicle ma...
£30000 - £36000 per annum + Benefits: Ashdown Group: C# Developer A highly s...
£45000 - £50000 per annum + benefits: Ashdown Group: A market leading software...