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Illustration: Aïda Amer/Axios

The U.S. has allegedly carried out another cyberattack against Iran in the wake of attacks on Saudi oil facilities in September, two unnamed U.S. officials told Reuters.

Why it matters, per Axios' Joe Uchill: This is the second publicly revealed round of cyberattacks in response to real world attacks, after U.S. Cyber Command targeted Iran following the downing of a U.S. drone in July. The U.S. and many of its allies have blamed Iran for the Saudi oil attacks, but Iran has vigorously denied the allegations.

What they're saying:

  • One official said the strike hit physical hardware, per Reuters.
  • Mohammad Javad Azari-Jahromi, Iran's minister of communications and information technology, denies the attack happened, telling Fars news agency: "They must have dreamt it."

The big picture: The U.S. strike "appears more limited" than other operations against Iran, per Reuters.

  • Iran has also engaged in cyberattacks. Earlier this month, an Iranian hacking group attempted to gain entry into email accounts associated with President Trump's reelection campaign.

Go deeper: Pompeo doubles down on claim of Iranian "act of war" in Saudi Arabia<br/>

Go deeper

2 hours ago - World

Putin foe Navalny to be detained for 30 days after returning to Moscow

Russian opposition leader Alexey Navalny. Photo: Oleg Nikishin/Epsilon/Getty Images

Russian opposition leader Alexey Navalny has been ordered to remain in pre-trial detention for 30 days, following his arrest upon returning to Russia on Sunday for the first time since a failed assassination attempt last year.

Why it matters: The detention of Navalny, an anti-corruption activist and the most prominent domestic critic of Russian President Vladimir Putin, has already set off a chorus of condemnations from leaders in Europe and the U.S.

Biden picks Warren allies to lead SEC, CFPB

Photo: Justin Sullivan/Getty Images

President-elect Joe Biden has selected FTC commissioner Rohit Chopra to be the next director of the Consumer Financial Protection Bureau (CFPB) and Obama-era Wall Street regulator Gary Gensler to lead the Securities and Exchange Commission (SEC).

Why it matters: Both picks are progressive allies of Sen. Elizabeth Warren (D-Mass.) and viewed as likely to take aggressive steps to regulate big business.

The perils of organizing underground

Illustration: Aïda Amer/Axios

Researchers see one bright spot as far-right extremists turn to private and encrypted online platforms: Friction.

Between the lines: For fringe organizers, those platforms may provide more security than open social networks, but they make it harder to recruit new members.