Trump steps up attacks on ex-Miss Universe

WASHINGTON (AP) — The Latest on the U.S. presidential race (all times EDT):

8:05 a.m.

Homeland Security Secretary Jeh Johnson says hackers are taking aim at state and local election officials, and that at least one recent attempt was successful.

Johnson tells MSNBC's "Morning Joe" on Friday that "exactly who did it" remains under investigation. Last month, the FBI warned state elections officials to boost their election security after hackers targeted data systems in at least two states, Illinois and Arizona. Johnson did not identify a location in his remarks.

Johnson said local election officials should reach out to the federal government to learn how to protect computer systems. With thousands of vote counting systems, "there is no one single point of failure," he said. But to prevent problems, he said, local officials should be vigilant.

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7:45 a.m.

Hillary Clinton plans to call on young people to participate in national service.

The campaign says the Democratic presidential candidate will announce plans Friday for a new national program designed to help people under 30 engage in public service.

She'll present her proposals in a speech Friday in Port St. Lucie, Florida.

It is the latest in a series of policy speeches designed to offer an affirmative message in the closing weeks of the presidential campaign. Clinton's campaign is seeking to contrast her approach with what they call Republican Donald Trump's "self-centered message."

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7:25 a.m.

Donald Trump is doubling down on his attacks on a former Miss Universe.

Trump unleashed a series of tweets early Friday saying that rival Hillary Clinton had shown bad judgment in using Alicia Machado "as a paragon of virtue."

In one tweet, Trump said: "Did Crooked Hillary help disgusting (check out sex tape and past) Alicia M become a U.S. citizen so she could use her in the debate?"

He offered no proof that Clinton had a role in Machado's citizenship. The "sex tape" reference was apparently about risque footage circulating online of Machado from when she appeared on a Spanish reality show.

At Monday's debate, Clinton cited Trump's past references to Machado as "Miss Piggy" and "Miss Housekeeping" as examples of Trump's disrespectful comments about women.

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3:15 a.m.

Donald Trump is warning voters that a Hillary Clinton victory would bring her husband's sex scandal back to the White House.

Injecting Clinton's marital troubles into the 2016 campaign is Trump's latest effort to bounce back from Monday night's widely panned debate performance. In contrast, Clinton has delivered a mostly positive message in the days since her debate performance re-energized her candidacy.

Clinton is stressing that her plans will solve the kind of kitchen-sink problems facing American families — the high cost of childcare, mounting student debt and unpaid family leave.

Trump is promising lower taxes and "jobs, jobs, jobs," but he has also intensified the dire warnings and personal attacks that have defined his outsider presidential bid.