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Trump’s cellphone use worries security experts

FILE - In this Jan. 28, 2017, file photo, President Donald Trump speaks on the phone with Prime Minister of Australia Malcolm Turnbull in the Oval Office of the White House in Washington. Trump, who blasted Hillary Clinton for using a personal email server, might be a walking magnet for eavesdropping and malware if he is using an unsecured cellphone to chat with foreign leaders. Trump has been handing out his cellphone number to counterparts around the world, urging them to call him directly to avoid the red tape of diplomatic communications. The practice has raised concern about the security and secrecy of the U.S. commander-in-chief's communications. (AP Photo/Alex Brandon, File)
FILE - In this Jan. 28, 2017, file photo, President Donald Trump speaks on the phone with Prime Minister of Australia Malcolm Turnbull in the Oval Office of the White House in Washington. Trump, who blasted Hillary Clinton for using a personal email server, might be a walking magnet for eavesdropping and malware if he is using an unsecured cellphone to chat with foreign leaders. Trump has been handing out his cellphone number to counterparts around the world, urging them to call him directly to avoid the red tape of diplomatic communications. The practice has raised concern about the security and secrecy of the U.S. commander-in-chief's communications. (AP Photo/Alex Brandon, File) FILE - In this Jan. 28, 2017, file photo, President Donald Trump speaks on the phone with Prime Minister of Australia Malcolm Turnbull in the Oval Office of the White House in Washington. Trump, who blasted Hillary Clinton for using a personal email server, might be a walking magnet for eavesdropping and malware if he is using an unsecured cellphone to chat with foreign leaders. Trump has been handing out his cellphone number to counterparts around the world, urging them to call him directly to avoid the red tape of diplomatic communications. The practice has raised concern about the security and secrecy of the U.S. commander-in-chief's communications. (AP Photo/Alex Brandon, File)

WASHINGTON (AP) – President Donald Trump, who blasted Hillary Clinton for using a personal email server, might be a walking magnet for eavesdropping and malware if he is using an unsecured cellphone to chat with foreign leaders.

Trump has been handing out his cellphone number to counterparts around the world, urging them to call him directly to avoid the red tape of diplomatic communications. The practice has raised concern about the security and secrecy of the U.S. commander-in-chief’s communications.

In today’s world of cyber espionage, cellphone security experts say such a policy is not only unorthodox, but dangerous. Voice calls can be intercepted. A cellphone’s signals to nearby phone towers can give up its precise location. Even cellular networks are vulnerable. And knowing someone’s number makes it easier to infect a phone with malware.

“Hillary Clinton’s email server was like Fort Knox compared to Trump just carrying around a regular cellphone,” said Andrew McLaughlin, former deputy chief technology officer for the Obama administration. “That’s how bad the vulnerabilities are.”

Running against Clinton for the presidency, Trump repeatedly criticized his rival for using a non-government email account while she was secretary of state. Trump argued that Clinton should not be given access to classified information because she would leave it vulnerable to foreign foes.