How to prevent a Trojan Horse or spyware harming your computer?
Install a personal firewall and antivirus software and make sure that you update the latter regularly. A personal firewall can help to protect your computer from internet threats.
Use an anti-spyware program to protect your computer from external monitoring and recording the information you have entered.
Regularly check for updates and security patches for your operating system and browser.
Do not install software or open email attachments from unknown sources. Never click on a hyperlink in any suspicious emails.
Ensure proper physical access controls for your PC to avoid being installed with malicious software (e.g. keystrokes logger) which may log down all the inputs to the online dealing service e.g. your username and PIN.
Do not access the online dealing service from a public PC (e.g. cyber cafes).
Verify the validity of the digital certificate if you have any doubt about the identity of the online dealing website.