Ten rules for internet security

At Komerční banka Slovakia, we want our clients to have the best possible security for their business and online.


Be careful when entering sensitive data

  • double check any web address where you are asked to enter personal data. The difference between the real and fraudulent address can be very subtle – for example kb.sr instead of kb.sk,

  • if an unknown site requests your personal data or a card payment, check the site by searching Google. Pay special attention to the experiences and reviews of people on sites that you trust.


Be careful about visiting unfamiliar sites and download only what you are sure about

  • whenever you visit a site, check that the domain matches the contents,

  • do not download and run files with unknown content,

  • only download apps for your phone from the official app stores (Google Play, Apple Store).


Use a secure password and carefully protect your PIN

  • choose a combination of upper- and lower-case letters, numbers and special characters (full stop, exclamation mark, question mark). A secure password needs at least eight characters. As an alternative, you could use a favourite long quotation or a line from a film, as long as you have not shared it on your internet profile,

  • change your password every six months and do not use the same password for all your services,

  • do not write your PIN on paper or in your phone,

  • use two-factor authentication wherever possible (social networks, e-mail services, internet banking, etc.).



  • do not click on anything in the contents of the e-mail and do not open any attachments,

  • check the grammar and sentence structure. If it contains errors, you are probably dealing with an automatically translated fraudulent e-mail,

  • always compare the sender’s e-mail address with the company that the e-mail purports to be from. It should end “@name_of_firm/institution.suffix_of_their_official_website”,

  • if the subject of message is a request for payment or the provision of personal data, first contact the company or institution that the sender claims to be representing.


Do not provide sensitive information just because someone wrote you an e mail

  • do not click on links in suspicious or unsolicited e‑mails,

  • never let yourself be persuaded by any arguments. Neither the bank, nor the police nor even close family members have the right to such information.


When you need electronic banking

  • never log in to it on a public Wi-Fi network (if it is not encrypted, unless you are using a VPN),

  • use only your (company) computer or phone,

  • allow only your own biometric data (fingerprint, face) on your phone,

  • always properly log out from banking apps.


Protect your login credentials (PINs and passwords), the phone with your KB Klíč (Key) app or your certificate chip card at all times

  • never leave them unsupervised,

  • never provide your security elements or credentials to anyone else. If there is no alternative in urgent cases, change the information as soon as possible afterwards,

  • if KB Klíč shows a login request or a request to authorise a transaction that was not requested by you, reject it and contact us at once.


Protect your computer

  • use a licensed antivirus program,

  • use Trusteer Rapport - a browser extension specially developed to protect financial institutions. It will give you early warning of fake (fishing) websites and protect your password against abuse,

  • update your operating system, browser and other programs regularly.

  • Use only legally acquired software and systems


Regularly check your login history

  • in the banking app itself,

  • in online mail clients (e.g., Gmail),

  • on social networks.


Do not open e mails from unknown addressees, or messages with suspicious subject lines

  • think about the content and trustworthiness of the message.