U.S. Department of Homeland Security
A cabinet-level department of the United States federal government, established in 2001. Its responsibilities include border security, immigration management, cybersecurity, and protection of critical infrastructure.
Core Facts
The U.S. Department of Homeland Security (DHS) was established after the "9/11" events in 2001 and is mainly responsible for border security, cybersecurity, critical infrastructure protection and emergency management.
CISA is responsible for coordinating the protection of 16 critical infrastructure sectors in the United States and operates US-CERT (the United States Computer Emergency Readiness Team).
Timeline (last 90 days)
DHS has a total of approximately 240,000 employees.
The more than 40,000 people leaked this time account for about one-sixth of DHS's total employees.
DHS employees generally hold security clearances, and some positions involve critical infrastructure protection and classified operations.
DHS oversees multiple agencies, including the Cybersecurity and Infrastructure Security Agency (CISA), the Secret Service, Customs and Border Protection, and Immigration and Customs Enforcement.
DHS is the third-largest cabinet department of the federal government.
A large-scale data breach exposed the personal information of about 41,000 U.S. Department of Homeland Security (DHS) employees.
The leaked information includes names, job titles, phone numbers, email addresses and office locations.
DHS has not yet provided a complete explanation of the incident details.
The data fields in this leak are concentrated at the level of employee directory information, rather than more sensitive biometric or case data.
A hacker stole the personal data of more than 41,000 employees from the U.S. Department of Homeland Security (DHS).
29 more timeline events
All Facts (20)
The U.S. Department of Homeland Security (DHS) was established after the "9/11" events in 2001 and is mainly responsible for border security, cybersecurity, critical infrastructure protection and emergency management.
65%VerifiedCISA is responsible for coordinating the protection of 16 critical infrastructure sectors in the United States and operates US-CERT (the United States Computer Emergency Readiness Team).
65%UnverifiedThe US federal agencies' restriction order against DeepSeek targets procurement and information systems of US federal civilian agencies, including related third-party products, rather than a global ban aimed at ordinary users.
60%UnverifiedDHS employees generally hold security clearances, and some positions involve critical infrastructure protection and classified operations.
50%UnverifiedDHS is the third-largest cabinet department of the federal government.
50%UnverifiedDHS oversees multiple agencies, including the Cybersecurity and Infrastructure Security Agency (CISA), the Secret Service, Customs and Border Protection, and Immigration and Customs Enforcement.
50%UnverifiedDHS has a total of approximately 240,000 employees.
50%UnverifiedThe more than 40,000 people leaked this time account for about one-sixth of DHS's total employees.
50%UnverifiedA large-scale data breach exposed the personal information of about 41,000 U.S. Department of Homeland Security (DHS) employees.
50%UnverifiedDHS has not yet provided a complete explanation of the incident details.
50%UnverifiedThe leaked information includes names, job titles, phone numbers, email addresses and office locations.
50%UnverifiedThe data fields in this leak are concentrated at the level of employee directory information, rather than more sensitive biometric or case data.
50%UnverifiedICE is the abbreviation for US Immigration and Customs Enforcement, which is part of the Department of Homeland Security and is responsible for civil immigration enforcement and deportation matters.
50%UnverifiedOn October 19, the US Department of Homeland Security made public an order that federal civilian agencies must not purchase or use DeepSeek; the order was signed in July and only made public this week, and the military, companies, and individuals are not covered.
50%UnverifiedThe order does not automatically ban other Chinese models; further restrictions still require a corresponding decision.
50%UnverifiedThe rule was originally issued on July 24, with the pre-release text made public on October 19, and it is scheduled for publication in the Federal Register on October 20.
50%UnverifiedThe ban order was issued as early as before July 24, but only became public recently.
50%UnverifiedThis DHS order is a federal procurement and usage restriction whose binding target is federal civilian departments, not all U.S. citizens or private enterprises.
50%UnverifiedCurrently available public information has not yet disclosed the specific implementation timetable, exemption mechanisms, or details of the consequences of violations of this order.
50%UnverifiedThe scope of removal ordered by DHS includes not only DeepSeek's own products but also products built by third-party vendors on top of DeepSeek implementations.
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