A significant cyberattack has impacted the French tax administration, prompting a national crisis response led by Prime Minister Sébastien Lecornu. The attack is being described as the most serious cyber incident in the country’s history. A dedicated interministerial crisis unit convened Monday to assess the extent of the breach and coordinate efforts to mitigate its effects. Officials have not yet disclosed the full scope of compromised data or potential impacts on taxpayers. A Senate investigation committee is being considered to further examine the incident and determine accountability. The government is working to contain the damage and reinforce cybersecurity measures across its systems. Further details are expected as the investigation progresses.