Iran's Tax Administration warns about fake text messages offering a signature certificate

Iran's Tax Administration issued a warning on Sunday 26 July 2026 about fake text messages relating to "obtaining a signature certificate for use in the taxpayers system".

According to Mehr News Agency, the organisation stressed that signature certificates are issued only through authorised gateways.

An electronic signature certificate is required for submitting invoices in the taxpayers system. The notice did not identify the numbers sending the fake messages or state any losses incurred.