Russia-linked hackers tried to access Hillary Clinton's private email

Hackers disguised malicious software in emails purporting to be parking tickets sent to former secretary of state's account

The risks posed by Hillary Clinton's use of a private email server while US secretary of state have been dramatically underscored by the disclosure of five attempts to break into her computer by hackers apparently based in Russia.

Disguised as New York City parking tickets, the malicious emails were contained in the latest tranche of records released by the State Department amid growing concern that Clinton's decision to avoid using government servers may have made classified information vulnerable to exposure.