Computer

How to
protect
computer

Beware of email
attachments
and illegal software

And what to do when hackers attack you

Overview of threats

Hacker Attack

What risks lurk behind the internet?
 

The goal of scammers is to smuggle malware into your computer or telephone. Thanks to that they may acquire sensitive data (certificate, password, PIN, data on payment card) which they then trade and use for stealing money from your account. Their methods are not technically sophisticated, exactly the opposite. They mainly try to confuse the user and win his trust. What should you be careful about?

It has happened. What now?
 

Did you open a harmful attachment or respond to an e‑mail or enter your password or a card number?

  • Contact your bank immediately and block your bank card. Client Bank Card Helpline of Komerční banka: +420 955 512 230.
  • Clean your computer and change all the passwords for the services you use.
  • For mobiles, perform factory reset or contact the manufacturer's service line. 
Phishing

Fraudulent e-mails or payment gates!
 

Phishing is a very insidious technique of scammers who want only one thing from you – your bank card number or access data to your internet banking. They can attack you on different sites on the Internet, they often masquerade as legit on-line payment gates or your bank's website. It is a scam!

It has happened. What now?
 

Somewhere you entered the number of your bank card or the password to your internet banking and you are not sure if it is not a fraud?

  • Contact your bank immediately and block your bank card. Client Bank Card Helpline of Komerční banka: +420 955 512 230.
  • Clean your computer and change all the passwords for services you use.
  • For mobiles, perform factory reset or contact the manufacturer's service line.

What to do if...

Check the address bar in the browser if the internet address of internet banking is correct. Click the lock icon and information about the certificate which protects secure connection will appear. Komerční banka uses a "verified certificate" for internet banking, you can see information about the certificate in the detail.

Zobrazení informací o certifikátu
Information about the certificate

If you are on a fake website, never ever enter sensitive data.

A certificate can be deleted using the function on the login page of internet banking, when you click the icon Remove in the Certificate Administration. However, the certificate will remain valid, it is only deleted from the relevant computer. It may remain on your computer as a back-up or it is inserted in other browsers on the computer. You can also remove the certificate by deleting temporary internet files, i.e. history deletion.

Use solely legal and updated software. Set an access password on your computer and never work with administrator rights, unless it is absolutely necessary, e.g. for the installation of antivirus software. Never install unknown or illegally acquired software, it can often been a source of infection. Use antivirus software applications. Komerční banka provides its clients with a plug-in to Trusteer Rapport antivirus software which provides efficient protection against misuse of your personal data and from dangerous fake websites (phishing).