French authorities are investigating an alleged foreign interference campaign targeting a hard-left political party ahead of March's municipal elections, with an obscure Israeli firm named BlackCore potentially involved, according to three sources familiar with the matter. French intelligence agencies are probing who commissioned the alleged BlackCore operation. The campaign reportedly sought to smear three candidates from the France Unbowed party. Tactics included deceptive websites and social media accounts alleging criminal behaviour, alongside disparaging digital advertisements, two sources indicated. BlackCore, which described itself on its now-offline website and LinkedIn page as "an elite influence, cyber, and technology company built for the modern era of information warfare," claimed to offer "cutting-edge strategies, advanced tools, and robust security to shape narratives" for governments and political campaigns.…