Budapest has faced EU scrutiny over the use of spyware against the opposition and civil society in past years.

Members of the European Parliament were offered special pouches to protect digital devices from espionage and tampering for a visit to Hungary this week, a sign of rising spying fears within Europe.

Five lawmakers from the Parliament’s civil liberties committee traveled to Hungary on Monday for a three-day visit to inspect the EU member country’s progress on democracy, the rule of law and fundamental rights.

One lawmaker on the trip confirmed to POLITICO that the Parliament officials joining the delegation were offered Faraday bags — special metal-lined pouches that block electromagnetic signals — by the Parliament’s services and were also advised to be cautious about using public Wi-Fi networks or charging facilities.