Is Russia at it again?

No doubt many eyes are on Moscow after the revelation last week that an attempt to hack into the Democrat National Committee’s computers was thwarted.

Coming two years after Russian hackers stole information from the DNC database, the new attempted electronic B&E does raise questions about whether the Kremlin is at it again.

Initial reports on this week’s discovery did not mention progress in determining the hackers’ location or affiliation. The FBI is investigating.

If indeed Russia is behind the DNC attempt, it is clear some U.S. punishment is in order. Perhaps more economic sanctions should be considered. Or retaliation in kind by hacking into an important Russian government computer may be a good idea.

There is another possibility, however slight, that Russia was not behind the new attempted incursion into the DNC computers. Though Russia’s past cyberattacks, clearly documented by American intelligence, make it Suspect Number One, it is not the only country with the motive and the skill to pull it off. U.S. officials should not be blind to that.

Any number of countries, including China and Iran, are capable of using cyberwarfare against the United States. Pitting us against each other politically falls into that category.

Hackers are endlessly inventive. Defending against computer invasions is critical — but deterring them is an even better approach.