Democratic presidential hopeful Hillary Clinton must be exhaling today after learning she’s off the hook criminally for her imprudent way of handling emails containing classified materials.

The FBI’s yearlong probe into the personal home server she used as secretary of state — eschewing the more protected server of the U.S. State Department — found that 110 emails were sent or received containing classified information and secrets, and that it was possible people hostile to U.S. interests may have gained access to her personal email account.

FBI Director James Comey, a tough former federal prosecutor in Richmond who had no problem locking people up and boosting the prison rolls with his programs like “Weed and Seed,”  called Mrs. Clinton’s actions “extremely careless” but said no charges were appropriate.

Careless, without intention to harm, nets some people manslaughter charges in drunk driving cases.

Careless, without intention to harm, results in others, like the van driver in Freddie Gray’s case, being slapped with a criminal indictment.

U.S. Attorney General Loretta Lynch said in a statement late Wednesday that Mrs. Clinton will not face any type of sanction or indictment. She said the case is now closed.

The questions are these: Did Mrs. Clinton’s actions result in any harm? And what is the administration doing to ensure that nobody currently is working from home using their own RadioShack equipment or will be in the future?

We don’t know the answer to either of these questions.

Certainly, the world of computer technology, hacking and cyber security has become more complex since Mrs. Clinton served in her cabinet post from January 2009 to February 2013. Universally, we are now more attuned to cyber crimes and the havoc hackers can wreak by not only stealing personal information and credit card numbers, but by bringing down power grids and shutting down economic systems.

What is to stop a hacker with terrorist ties from getting the codes to nuclear weapon systems and striking a worldwide disaster?

With the increase even in recent weeks of mass deaths at the hands of terrorists, we all must be more cautious with the materials we handle.

We, along with Mrs. Clinton, have learned from her mistake. If that’s the worst she has, then it should not cripple her candidacy to become president.

Just think about the alternative.