OK, you persuaded me, I will use card. Last question - what is extension Database Update good for? Do I need it? I understand, it is for updating extensions, but do I need it for malware scanner or for Security Check Pro?
Database updates are needed to keep your vulnerabilities' database updated. Without it, you will have to wait until I publish a new version of Securitycheck Pro to be up to date of the latest vulnerabilities (as you know, you can check if you have vulnerable versions installed with one button in Securitycheck Pro). With it you will always be up to date of the latest vulnerabilities, so you will be alerted quickly in case you have any vulnerable version installed.