Chinese hackers tried to break into the cellphones of former President Donald Trump and GOP vice presidential candidate Sen. JD Vance by compromising US telecommunications systems, a shocking breach revealed 11 days before the US election.

The sophisticated hacking campaign targeted Verizon and may have gained access to data or messages sent by Trump, 78, and Vance, 40. The hack was first reported Friday by the New York Times.

Trump and Vance were only informed of the situation this week, though it remains unclear how many communications — encrypted or unencrypted — were obtained or may be still accessible by one of America’s chief adversaries.

Top congressional Democrats were also in China’s crosshairs, as may have been officials with Vice President Kamala Harris’ campaign.

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Security officials uncovered the exact phone numbers targeted after learning earlier this year that a China-linked hacking group, Salt Typhoon, had infiltrated US telecoms systems.

The Chinese cyberattack of US broadband providers’ networks — including Verizon, AT&T and Lumen — may have also gotten access to data that the feds companies hand over to comply with any requests from the feds under the Foreign Intelligence Surveillance Act (FISA), the Wall Street Journal reported in September.

Beijing’s intelligence services are believed to be behind the attack, which the Journal noted could also be seeking to monitor federal law enforcement — and had even unsuccessfully targeted one of their own journalists.

The FBI and Cybersecurity and Infrastructure Security Agency (CISA) acknowledged “unauthorized access to commercial telecommunications infrastructure by actors affiliated with the People’s Republic of China” in a joint statement Friday.

The agencies have launched an investigation and said they were “collaborating to aggressively mitigate this threat.”

A Verizon rep confirmed the intelligence-gathering effort by a state actor in a separate statement, saying the company was “working to confirm, assess and remediate any potential impact.”

Three Iranian paramilitary operatives successfully hacked members of the Trump team earlier this year and forwarded potentially damaging information to President Biden’s re-election campaign, according to an indictment filed Sept. 26 by the Justice Department.

Federal prosecutors said the Islamic Revolutionary Guard Corps (IRGC) hackers barraged four Trump campaign operatives, current and former US government officials, journalists and others with phishing emails and were able to access some data of those who fell for the scheme by clicking links.

The hack reportedly included a dossier on Vance as well as material to help Biden prepare for his June 27 debate against Trump.

“As you must know that the first debate is [Biden]’s ‘last chance,’ and if he loses the debate, you [Democrats] will have to replace [Biden] with another candidates,” read one email sent the day of the debate to personal email accounts of people the hackers believed were on the Biden-Harris campaign.

Tehran began targeting Trump and some of his allies soon after the January 2020 airstrike that killed IRGC Commander Qassem Soleimani — and has since reportedly sought to either kill the former president via a drone attack or by paying off hitmen to finish the job on US soil.

The US intelligence community has already made clear in briefings that China, Iran and Russia are all seeking to influence the 2024 election.

All three adversaries have the technical capabilities “to access some US election-related networks and systems,” according to an Oct.16 memo from the National Intelligence Council that was declassified.

Iran had sought to sway the election in Biden’s favor, until he dropped out and Tehran began to boost Harris, intelligence officials have also disclosed.

The officials have said China is not particularly seeking to elevate Trump or Harris in the race but, rather, is hoping for certain outcomes in congressional races.

“This is the continuation of election interference by Kamala Harris and Democrats who will stop at nothing, including emboldening China and Iran attacking critical American infrastructure, to prevent President Trump from returning to the White House,” said Trump campaign spokesman Steven Cheung. “Their dangerous and violent rhetoric has given permission to those who wish to harm President Trump. 

“They have now stood by and allowed major foreign adversaries to attack us in order to illegally help Kamala because they know she represents a weak American who will always bow down. Whereas, President Trump will actually stand up against our enemies and defend the United States from any and all aggression.”

Neither the Harris campaign nor the Chinese embassy in Washington immediately responded to a request for comment.