Pay special attention to whether you see the https prefix and the closed padlock icon before the kantordlafirm.pl address during login. This means that the site is secured with a security certificate, and your connection to it is encrypted.
Take care of your password. Do not share it with third parties, and do not use the same password for logging in on other websites.
Regularly update the software you use, especially the operating system, antivirus software, and web browser.
Security for you and your money. The data and operations are secured by a SSL Certificate guaranteeing the highest level of security.