The mechanism was established by G7 leaders at the 2018 Charlevoix summit as part of a commitment to uphold a rules-based international order and counter foreign threats to democracies, according to the Polish foreign ministry.
In addition to G7 members, the initiative includes associate members such as Australia, New Zealand, NATO, the Netherlands and Sweden.
Poland brings experience in countering foreign interference, including in the information and cyber domains, the foreign ministry said in a statement.
"Our national threat detection capabilities and willingness to confront malign actors will strengthen the collective resilience of participating countries," the ministry said.
It added that Poland’s accession reflects international confidence in its experience in safeguarding democratic security and marks another step toward strengthening transatlantic and European cooperation against hybrid threats and disinformation campaigns.
Poland is continuing to develop institutions responsible for responding to hybrid and foreign information manipulation and interference (FIMI) threats, and membership in the mechanism will allow for improved information sharing, coordinated action and more effective real-time responses, the statement also said.
The G7 group of the world's richest democracies is made up of the United States, Japan, Germany, Britain, France, Canada and Italy.
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Source: IAR, PAP, gov.pl