Threat of sleeper cells in US has ‘never been higher': CBP
The threat of sleeper cells in the U.S. has 'never been higher,' though there are no current specific threats, according to U.S. Customs and Border Protection (CBP).
A memo sent Saturday from CBP Commissioner Rodney Scott, obtained by The Hill's sister network NewsNation, said 'thousands of Iranian nationals have been documented entering the United States illegally and countless more were likely in the known and unknown got-a-ways.'
'Though we have not received any specific credible threats to share with you all currently, the threat of sleeper cells or sympathizers acting on their own, or at the behest of Iran has never been higher,' Scott added.
The memo urged CBP personnel to remain 'vigilant.'
On Saturday, President Trump announced that the U.S. had bombed three Iranian nuclear sites, stepping into an ongoing conflict between Iran and Israel. Iran's ambassador to the United Nations slammed the U.S.'s involvement in its conflict against Israel and said his nation's military would figure out its response to the strikes.
NewsNation correspondent Rich McHugh said Friday on the network that 'experts that we've talked to said that should the U.S. join these strikes against Iran, they may try to activate these sleeper cells in the U.S. and the West.'
On Sunday, retired Gen. Frank McKenzie, the former commander of U.S. Central Command, said that he believed U.S. troops in Iraq and Syria were 'certainly vulnerable' to retaliatory attacks by Iran.
Copyright 2025 Nexstar Media, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

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Newsweek
an hour ago
- Newsweek
Iran Defies Trump on Nuclear Program
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an hour ago
Iranian-backed hackers go to work after US strikes
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Following Hamas' Oct. 7, 2023, attack on Israel, for instance, hackers penetrated an emergency alert app used by some Israelis and directed it to inform users that a nuclear missile was incoming. 'It causes an immediate psychological impact," said Ziv Mador, vice president of security research at Trustwave's SpiderLabs, which tracks cyberthreats. Economic disruption, confusion and fear are all the goals of such operations, said Mador, who is based in Israel. 'We saw the same thing in Russia-Ukraine.' While Iran lacks the cyberwarfare capabilities of China or Russia, it has repeatedly tried to use its more modest operations to try to spy on foreign leaders — something national security experts predict Tehran is almost certain to try again as it seeks to suss out President Donald Trump's next moves. Last year, federal authorities charged three Iranian operatives with trying to hack Trump's presidential campaign. 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San Francisco Chronicle
an hour ago
- San Francisco Chronicle
Drone debris found in Ukraine indicates Russia is using new technology from Iran
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The new drone has markings that suggest the anti-jamming unit was made in Iran within the past year and similarities to Iranian components found in older models of the Shahed, said Beskrestnov. Such advanced antennas, said Hinz, have not previously been seen on drones used in Ukraine but have been found on Iranian missiles destined for Iran-backed Houthi rebels in Yemen. In a statement, Ukraine's Ministry of Defense told AP in the past four months it had found drones with eight and 12 antennas made in China and Russia. Despite sanctions, both Russia and Iran have continued to find ways to procure Western technology. The drone's AI computing platform can help it autonomously navigate if communications are jammed. Similar technology was used by Ukraine to attack aircraft deep inside Russia during Operation Spiderweb, when it used drones to target Russian air bases hosting nuclear-capable strategic bombers. Changing tactics Russia is improving its technology at the same time as it is also changing its tactics. Moscow is flying the Shahed drones at high altitudes where they are out of reach of Ukrainian shooters, as well as lower down to avoid radio detection. It is also carrying out massive group attacks on cities including where drones sometimes dive-bomb a target, Ukraine's Ministry of Defense said. The drones can be used to clear a path for cruise missiles or to exhaust Ukrainian air defenses by sending a wave of decoys followed by one or two with a warhead. The tactics appear to be working. AP collected almost a year's worth of Russian drone strike data on Ukraine posted online by the Ukrainian air force. An analysis shows that Russia significantly ramped up its attacks after U.S. President Donald Trump was inaugurated in January. And Russian hits have increased markedly since March — shortly before reports emerged that Russia was using Shahed drones with advanced jammers. In November 2024, only around 6% of drones hit a discernible target but, by June, that reached about 16%. On some nights, almost 50% of drones got through Ukraine's air defenses. Ukraine's Ministry of Defense said the Shaheds' effectiveness is likely because Russia is firing more drones, including decoys, as well as the change in technology and tactics. But although Russia appears to have had increasing success striking Ukraine, it is not clear if that will continue. Israel's strikes on Iran will 'certainly' hurt Russia long-term, Albright said. Moscow, he said, is 'not going to be able to get as much assistance from Iran as it has been.' —— This story has been corrected to show only around 6% of drones hit a discernible target in November 2024, not November 2022. ——