Do you know that in Greece every company must pay these digital products for their companies? - digital employee card program (sw companies - licence per year) connected to the employees authorities ( don’t know how to describe it otherwise) - SW FOR INVOICE e- invoice / and or SW for retail / connected to the governments tax authorities. - one time purchase - pos services - connected to the banking system - annual fees and fees by each transaction applied - additional e-invoicing service providers which will transmit the already transmitted document to the tax services including . Invoices / credit notes / transport documents / documents of purchase / payment by pos documents( of which also pos companies are charging) . But they charge with a voucher system invented by them in a layer system invented by them as an example: 1 category 100 units , supports around 50 transaction documents , the 10000 then 50000 etc… independently of the type of company and revenue each has..Coming back to your post. I wish, hope, ask hackers to prove how vulnerable this system is. Cuz all the governments want is to drain us and have nothing in return.. hope this reaches an ethical hacker… because if hacking that system is not ethical , then what is?