How to recognise malicious software

What is malicious software or malware?

Criminals use malicious software, or malware, to access your computer without you knowing it. The software is installed on your computer when you click on the attachment in a fake email, visit an untrustworthy website or use an infected USB stick.

Characteristics of malicious software

Slower running computer or unwanted pop-ups with advertising

  • Don’t use this computer for online transactions or to log in to Creditcard Online.
  • Go to a company with expertise in removing malicious software to check your computer. In the meantime, use another computer for online transactions and to log in to Creditcard Online.
  • Do you have questions about fraud, or do you want to make a report? Contact the Fraud Help Desk. This organisation works together with the police and the Public Prosecution Service.

Pop-ups asking for credit card details

Blocked computer with a message asking for payment

  • Never pay. Take your computer to a specialist in removing malicious software.
  • Don’t respond to offers from people trying to sell you computer cleaning services. Always take the initiative yourself.

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