A leaked NSA document describes a two-stage Russian election influence campaign (and the alleged leaker is arrested).
On Monday the Intercept published a leaked, classified, NSA report that detailed Russian hacking during 2016's US elections. In August of that year an election software vendor sustained a phishing attack apparently aimed at gaining access to credentials that would permit reconnaissance and inspection of voting systems (for the most part voter registration databases). After the initial compromise, a spearphishing campaign against various state and territorial election officials was mounted. This seems more of what's long been known or suspected: voter registrations lists appear to have been compromised, but there's little evidence that vote counts themselves were susceptible to manipulation (Ars Technica).
On Saturday, June 3rd, the FBI interviewed and arrested a 25-year-old US Air Force veteran, Reality Leigh Winner. Since leaving the Service in February, Winner had been employed in the state of Georgia by Federal contractor Pluribus International. The Justice Department announced that Winner has been charged with "removing classified material from a government facility and mailing it to a news outlet, in violation of 18 U.S.C. Section 793(e)" (Department of Justice). She is alleged to have printed and removed the classified report from a secure facility on May 9th. Authorities learned of the leak last week when a news organization, unnamed in official reports but presumably the Intercept, sought to authenticate the material (Motherboard).
The Intercept has refused to name its source, and in any case it's possible they received the material anonymously. Edward Snowden thinks Winner's prosecution would be an assault on freedom of the press, but that, of course, is hardly what the lawyers would call an admission against interest. Why the news outlet would have shown a copy of the document to the "US agency" (presumably NSA) for authentication it is unknown, and seems odd. They would have done a better job of protecting their source had the people they shown it to not been able to see folds and a printer's steganographic dots. WikiLeaks' Julian Assange is on the warpath against the Intercept for what he regards as outrageously negligent journalistic malpractice (also not an admission against interest) (Daily Beast).
Winner served in the US Air Force as a cryptologic language analyst (with proficiency in Pashto and Farsi). She last served in the 94th Intelligence Squadron at Fort Meade, Maryland, home of NSA and US Cyber Command (Air Force Times). Airmen serving as cryptologic language analysts are intelligence specialists "responsible for translating and analyzing messages" (US Air Force). Winner will plead not guilty; by some accounts she's considering a strategy of appearing sweet and inoffensive (WSB-TV). The Federal magistrate judge has ordered her jailed pending trial (Chicago Tribune).
It's unknown how successful the Russian influence attempts described in the leaked report were. But observers note that the US Government's "cut it out," naming-and-shaming efforts (Politico) seem to have had small effect, since the Russian campaign (attributed to Fancy Bear, that is, the GRU) continued into the election season's final weeks NPR). Russia's President Putin's comment on this and other aspects of the long-running controversy over election influence comes down, essentially to yolki palki, fiddlesticks: it's all "a lot of nonsense." Besides, he doesn't even know US President Trump (Military Times).