Advertisement or “Promotion of one’s business activity’s sectors” of a Lawyer or a Law Firm is not prohibited, but is subject  to the restrictions provided under Article 40 of the Lawyers’ Code. These include references to the number or percentage of successful cases or comparisons to other Lawyers or Law Firms etc..For unofficial version of Lawyer's code see: https://www.e-nomothesia.gr/kat-dikasteria-dikaiosune/n-4194-2013.html