Already complex, Polish-Russian relations could deteriorate further after this incident.
On Wednesday, an "unprecedented" wave of cyber attacks targeted the computer sites of institutions, as well as the mailboxes of senior Polish politicians.
Parliament met behind closed doors to listen to a speech by Prime Minister Mateusz Morawiecki following the attack.
Two days later, the Polish government knows more about this incident and in particular its origin.
"The analyzes of our services and the special services of our allies allow us to state unequivocally that the cyberattack was carried out from the territory of the Russian Federation," Jaroslaw Kaczynski, leader of the ruling Nationalist Party, said in a statement. Poland.
"Destabilize the country"
"Senior officials, ministers, deputies from different political stripes were victims of this attack," Jaroslaw Kaczynski, also Deputy Prime Minister in charge of national security, said on Friday.
A portion of the intercepted private emails appeared on the Telegram messaging app.
Last week, the minister responsible for the national immunization program, Michal Dworczyk, was the victim of a cyber attack on his private electronic mailbox.
According to the media, it contained official documents, including some secrets, which the person denies.
According to Jaroslaw Kaczynski, the cyber attack aims to "destabilize the country".
Historically complicated Polish-Russian relations have experienced a resurgence of tension since Russia's annexation of Ukrainian Crimea in 2014 and Moscow's support for Belarusian President Alexander Lukashenko.
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