The incident, which officials say involved infected email links that targeted local and national party members, has raised concerns about possible foreign interference in the run-up to Poland’s presidential election.
Hackers reportedly first compromised the email account of a local PO activist, then used it to distribute malicious links to multiple party lawmakers.
One suspicious recipient alerted authorities, who launched an investigation into the breach.
Prime Minister Donald Tusk, who leads the PO, announced the attack on Wednesday, calling it “foreign interference in the elections,” and saying that intelligence services had identified "an Eastern trace."
Deputy Digital Affairs Minister Michał Gramatyka on Friday confirmed the intrusion, saying it spread malware through email attachments and "affected several other accounts."
While Poland’s state-level IT infrastructure is well protected, he said, private servers and party systems are more vulnerable.
Gramatyka warned that "the number of attacks is increasing and likely to rise even more before the elections," urging basic digital caution.
(jh/gs)
Source: IAR, Polskie Radio 24
Click on the audio player above to listen to a report by Michał Owczarek.