Corruption: Hillary Clinton’s effort to conceal her State Department communications from the disinfecting glare of sunlight was planned from the beginning. It’s time to know what she wanted to hide.

Emails received Monday from the State Department by a government watchdog organization show that department officials were busy early in Clinton’s tenure setting up a stand-alone personal computer in a “counselor office” so the secretary could “go across hall regularly to check her email.”

Lewis Lukens, a former deputy assistant secretary of state and executive director of the secretariat, said in a note to Clinton Chief of Staff Cheryl Mills that “the office across the hall” would  be set up “as requested.”

“I think we should go ahead (but will await your green light) and set up a stand-alone PC in the secretary’s office, connect to the internet (but not through our system) to enable her to check her emails from her desk,” Lukens wrote.

Patrick F. Kennedy,  State Department undersecretary for management, responded that the “stand-alone separate network PC is (a) great idea.”

Judicial Watch, which sued for release of the emails, said the communications were exchanged on Jan. 23 and 24, 2009, just days after Clinton was sworn in as secretary.

Quite clearly, the Clinton team was involved in a plot to deceive. And it’s unlikely it was done without the secretary’s knowledge or approval. It’s long been known that she didn’t want to use the State Department’s secure email system.

The question is, what was she trying to hide by using personal email on a nonsecure private server? Because that’s what she was doing. A federal official with nothing to conceal would have no problem using a government communications system that would archive correspondence and make it readily available for compliance with Freedom of Information Act requests and lawsuits.

So what was it that Clinton wanted to hide? Did she provide material assistance to terrorists, as some believe?  Did she use her position as secretary to divert cash to the Clinton Foundation from shady sources? Did she want to cover up illegal fundraising outside the public’s prying eyes? Or hide her relationship with, and reliance on, longtime crony Sidney Blumenthal, who at times acted as her advisor even though the Obama White House refused to let her hire him?

Clinton’s efforts to bury her activity not only failed, they endangered “sources, methods and lives” in the intelligence field.

“Emails that the intelligence community and State Department recently deemed too damaging to national security to release contain ‘operational intelligence,’ ” Fox News reported Monday,  “and their presence on the unsecure, personal email system” placed humans and programs in jeopardy.

This, coupled with the Judicial Watch report, should be enough to sink Clinton’s candidacy. It would certainly kill any Republican’s presidential run.

But no one is suggesting that she drop out. Apparently Democratic voters and the media think she’s above the law, just as she and Bill do.