The warning came after the pro-Europe centrist's team lambasted a "massive and coordinated" hack that resulted in the online leak of thousands of emails, accounting details and internal documents late yesterday.
It was an unexpected 11th-hour twist ahead of Sunday's decisive run-off after a bruising and divisive campaign pitting the 39-year-old former banker who embraces free-trade against his anti-EU, far-right rival Marine Le Pen.
The documents spread on social media just before midnight as the candidates officially wrapped up campaigning, in what Macron's team termed an attempt at "democratic destabilisation, like that seen during the last presidential campaign in the United States".
Hillary Clinton has alleged Russian hacking of her campaign's emails was partly to blame for her defeat by Donald Trump in the US presidential election in November.
"Clearly, the documents arising from the hacking are all lawful and show the normal functioning of a presidential campaign," aides said in a statement.
But they warned that whoever was behind the leak had mixed fake documents with real ones "in order to sow doubt and disinformation".
The WikiLeaks website yesterday posted a link to the documents on Twitter, saying it had not yet discovered fakes in the cache of files and "we are very skeptical that the Macron campaign is faster than us."
Senior Le Pen aide Florian Philippot suggested on Twitter that the leak might contain information the media had deliberately suppressed.
The election watchdog advised media not to publish details from the documents, warning that publication could lead to criminal charges and that some of the documents were probably fake.
The upset came at the end of a frantic final day of campaigning and as fresh security concerns emerged following the arrest of a suspected extremist.
Disclaimer: No Business Standard Journalist was involved in creation of this content
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
