His remarks echoed ones by Mr. Trump, who has dismissed accusations of Russian meddling and said that the person responsible for the attack on the Democratic National Committee “could be somebody sitting on their bed that weighs 400 pounds.”
All the same, Mr. Putin stuck firmly to earlier denials that Russian state bodies or employees had been involved, an accusation leveled by United States intelligence agencies. They concluded in January that Mr. Putin himself had directed a Russian “influence campaign” involving cyberattacks and disinformation intended to tilt the November election in Mr. Trump’s favor.
“We’re not doing this on the state level,” Mr. Putin said on Thursday.
The boundary between state and private action, however, is often blurry, particularly in matters relating to the projection of Russian influence abroad. Nominally private Russian citizens have fought alongside Russian-speaking rebels in eastern Ukraine and have taken part in various campaigns to advance Moscow’s agenda in Eastern and Central Europe.
Perhaps worried that American intelligence agencies could release evidence linking last year’s cyberattacks to Russia, Mr. Putin also put forward a theory that modern technology could easily be manipulated to create a false trail back to Russia.
“I can imagine that someone is doing this purposefully — building the chain of attacks so that the territory of the Russian Federation appears to be the source of that attack,” Mr. Putin said. “Modern technologies allow to do that kind of thing, it’s rather easy to do.”
In this, Mr. Putin appeared to be repeating an argument he put forward earlier in the week in an interview with the French newspaper Le Figaro.
“I think that he was totally right when he said it could have been someone sitting on their bed or somebody intentionally inserted a flash drive with the name of a Russian national, or something like that,” Mr. Putin told Le Figaro, referring to Mr. Trump. “Anything is possible in this virtual world. Russia never engages in activities of this kind, and we do not need it. It makes no sense for us to do such things. What for?”
The evolution of Russia’s position on possible meddling in the American election is similar to the way Mr. Putin repeatedly shifted his account of Russia’s role in the 2014 annexation of Crimea and in armed rebellions in eastern Ukraine: He began by categorically denying that Russian troops had taken part before acknowledging, months later, that the Russian military was “of course” involved.