department of homeland security flag

DHS Warns of Iran’s Potential To Retaliate With Cyber Attacks, Terrorist Acts After Soleimani Killing

The department warned in an alert that Iran has a “robust cyber program” and can carry out attacks to temporarily disrupt critical infrastructure.

In the days after Iran’s top military leader, Qassim Suleimani, was killed in an American drone strike, the country’s leadership has promised revenge on the U.S. Now, top government officials anticipate that Iran’s retaliation may take the form of a cyber attack on major computer systems.

Christopher Krebs, the head of the Cybersecurity and Infrastructure Security Agency (CISA) within the Department of Homeland Security, warned on Jan. 2 that the threats to the public go beyond attacks on the federal government.

“Pay close attention to your critical systems,” Krebs wrote on Twitter. “Make sure you’re also watching third party accesses!”

While the department’s acting secretary, Chad Wolf, said in the days after the drone attack that there are no “specific, credible threats” to the U.S., it’s clear that cybersecurity leaders are concerned about the possibility of an Iranian attack. DHS went on to issue an alert of a terrorism threat to the U.S. on Jan. 4, detailing specific aspects of Iran’s capabilities.

As of Monday afternoon, no official cyber attack had been reported as coming from an established Iranian government-based hacking group. But the attack “may come with little or no warning,” the DHS warned, particularly after Suleimani’s funeral on Monday.

ZDNet reported that there have been some low-level cyber attacks over the weekend that involved the defacement of about 20 websites, including that of a government site for the Federal Depository Library Program. The attacks did not appear to originate from government-backed hacking groups.

The DHS alert referenced Iran’s efforts in the past to scope out terrorist acts against the U.S., including “scouting and planning against infrastructure targets and cyber enabled attacks against a range of U.S.-based targets.”

Some critics of the Trump administration fear that DHS is not well prepared to handle a widespread security threat thanks to its increased focus on immigration, a priority of President Trump.

John Cohen, a former acting under security in the DHS who led efforts to counter Iran, said a comprehensive plan must be developed to address the growing threat. He is doubtful that the plan will be developed in concert with local governments.

“There has been real concern that the focus on immigration enforcement and the border wall have degraded our capabilities to address not only the threat posed by domestic terrorists but sophisticated threats like this,” Cohen told The New York Times. “Time will only tell.”

About the Author

Haley Samsel is an Associate Content Editor for the Infrastructure Solutions Group at 1105 Media.

Featured

  • Cutting Retail Losses

    Retail is still a more complex and dynamic security vertical in modern society. Inherent challenges with in-store and distribution center operations are primarily due to constantly shifting consumer buying trends. Retailers must show daily flexibility to keep workers, meet sales goals and attract customers while maintaining safe and efficient operations. Retail is an intricate web of interconnected elements. Read Now

  • The Key to Wellbeing in the Office

    A few years ago, all we saw in the news was the ‘great resignation.’ Now we have another ‘great’ to deal with. According to CBRE, 2023 was the start of the ‘great return’ as office workers returned to their normal offices after working from home. The data shows that two-thirds of all U.S office buildings were more than 90% leased as of Q2 2023. Read Now

  • Failed Cybersecurity Controls Costing U.S. Businesses $30 Billion Yearly

    Panaseer recently released ControlWatch and the Continuous Controls Battle: Panaseer 2025 Security Leaders Report examining the cost of cybersecurity control failures and the impact of growing personal liability for security failings on security leaders. The report analyzes the findings of a survey of 400 security decision makers (SDMs) across the US and UK. It shows that security leaders feel under increasing pressure to provide assurances around cybersecurity, exposing them to greater personal risk – yet many lack the data and resources to accurately report and close cybersecurity gaps. Read Now

  • The Business Case for Video Analytics: Understanding the Real ROI

    For security professionals who may be hesitant to invest in video analytics, now's the time to reconsider. In a newly released Omdia report commissioned by BriefCam (now Milestone Systems), the research firm uncovered a compelling story: more than 85% of North American and European organizations that use video analytics achieve a return on investment within just one year. The study, which surveyed 140 end users across multiple industries, demonstrates that security technology is no longer just for security — it's a cross-organizational tool that delivers measurable business value far beyond traditional safety applications. Read Now

Featured Cybersecurity

Webinars

New Products

  • Camden CV-7600 High Security Card Readers

    Camden CV-7600 High Security Card Readers

    Camden Door Controls has relaunched its CV-7600 card readers in response to growing market demand for a more secure alternative to standard proximity credentials that can be easily cloned. CV-7600 readers support MIFARE DESFire EV1 & EV2 encryption technology credentials, making them virtually clone-proof and highly secure. 3

  • QCS7230 System-on-Chip (SoC)

    QCS7230 System-on-Chip (SoC)

    The latest Qualcomm® Vision Intelligence Platform offers next-generation smart camera IoT solutions to improve safety and security across enterprises, cities and spaces. The Vision Intelligence Platform was expanded in March 2022 with the introduction of the QCS7230 System-on-Chip (SoC), which delivers superior artificial intelligence (AI) inferencing at the edge. 3

  • A8V MIND

    A8V MIND

    Hexagon’s Geosystems presents a portable version of its Accur8vision detection system. A rugged all-in-one solution, the A8V MIND (Mobile Intrusion Detection) is designed to provide flexible protection of critical outdoor infrastructure and objects. Hexagon’s Accur8vision is a volumetric detection system that employs LiDAR technology to safeguard entire areas. Whenever it detects movement in a specified zone, it automatically differentiates a threat from a nonthreat, and immediately notifies security staff if necessary. Person detection is carried out within a radius of 80 meters from this device. Connected remotely via a portable computer device, it enables remote surveillance and does not depend on security staff patrolling the area. 3