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DHS Data Breach: 41,000+ Employee Records Leaked by Hacktivists

A significant data breach has exposed personal and operational details of over 41,000 Department of Homeland Security (DHS) employees, including undercover ICE agents and surveillance personnel.

AI disclosure: Model-written assessment of the linked reports, not a verified fact. Check the sources. How Mosaic works

Unknown0 of 9 key facts linked
Not measuredno reporting-volume measure is served for situations
Not assessedno severity is rated for situations
8 publishers9 reports

: Escalating (the model's assessment, not a measurement)

Oct 29First seen Oct 28Assessment written Oct 29
Why now
Newest report Oct 29: DHS Breach: Activists Leak Data of 41,000 Employees, Including ICE Officials (Kronen Zeitung).from the newest member report, published 29 Oct 07:46 UTC
Why it matters
This breach poses critical intelligence and operational security risks, potentially exposing sensitive personnel to targeting and undermining federal law enforcement capabilities.
Affected
United States (lead)countries named in the evidence; the lead is the country it is filed under, not an event location
Next catalyst
No scheduled catalyst known.Mosaic holds a schedule only for economic-calendar releases; 4 indicators to watch below
Watch in Monitor Export brief

Save keeps it in Monitor › Saved, without alerts. Watch opens Monitor with “DHS Data Breach” as the subject.

Known and unknown

key facts by their own evidence status

Known

None of the key facts is established by the evidence yet.

Not established

  • Data on over 40,000-41,000 DHS employees, including names, phone numbers, and email addresses, has been leaked.
  • The data was published by DDoSecrets, sourced from the 'Department of Peace' group via Swiss journalist maia arson crimew.
  • The leak includes personnel from ICE, CBP, CISA, and those involved in surveillance and special operations.
  • Bluesky has blocked links to the leaked archive.
  • The leaked data includes details of undercover ICE agents, facility locations, cellphone numbers, and affiliations with wiretap programs and tech vendors.
  • This is the third US government data breach in the last month, following incidents at the FBI and DoD.
  • The full scope and authenticity of all leaked data remain partially unverified.
  • The precise method or attack vector used to exfiltrate the data remains unclear.
  • The specific source of the leak (e.g., insider threat, external hack) is not fully confirmed.

stated, not yet supported by linked evidence

Indicators to watch

  • →Official DHS statement or confirmation of data authenticity and scope
  • →Identification of specific individuals or operations compromised by the leak
  • →Further details on the attack vector or perpetrator
  • →Responses from US federal agencies regarding enhanced cybersecurity measures

what would change the read; not a schedule

Evidence

Unknown · 9 reports · 8 distinct outlets

Central claim DDoSecrets leaks data of 40,000+ DHS employees, third govt breach in month

9 reports, newest first. Each time is when the report was published, or when Mosaic recorded it if no publication time was given; event times are not recorded. Several outlets can carry one story, so a number of reports is not independent confirmation.

  1. published
    DHS Breach: Activists Leak Data of 41,000 Employees, Including ICE OfficialsKronen Zeitung · Reported
  2. published
    Hackers breach ICE systems, exfiltrate data of thousands of officersFAZ · Reported · Context · does not support the central claim
  3. published
    DHS data breach exposes 41,000 employee names, including classified identitiesDagens Industri · Reported
  4. published
    Bluesky blocks links to DHS employee data leak affecting 41,000WIRED Security · Reported
  5. published
    DHS data leak exposes 40,000+ employee records, follows FBI and DoD breachesDeutsche Welle · Reported
  6. published
    DHS employee data leak exposes 40,000 personnel, including surveillance staffNRK · Reported
  7. published
    DDoSecrets leaks data of 40,000+ DHS employees, third govt breach in monthGuardian World · Reported
  8. published
    Hacktivists leak data on 41,000+ DHS employees via DDoSecretsCyberScoop · Reported
  9. published
    Massive leak exposes 41,000 DHS workers, including undercover ICE agentsWIRED Security · Reported

Connected

named in this situation's reports; not a claim that one causes another

Other situations in United States

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Assessment

model confidence: under Technical details
Read the full assessment

A significant data breach has exposed personal and operational details of over 41,000 Department of Homeland Security (DHS) employees, including undercover ICE agents and surveillance personnel. The leak, attributed to hacktivist group 'Department of Peace' and published via DDoSecrets, represents the third such US government breach in the past month, indicating systemic cyber vulnerabilities. The full scope of compromised data and the precise attack vector remain partially unconfirmed.

AI disclosure: Model-written assessment of the linked reports, not a verified fact. Check the sources. How Mosaic works

Topics data breach · dhs · ddosecrets · government · leak · surveillance · cybersecurity · federal agencies · personal data · data leak · homeland security · ice

Technical details
Impact score
5.6 / 10 · a priority score, not confidence
Model confidence
Low: evidence unknown (the evidence conflicts; a key fact is not linked to evidence); 8 distinct outlets
Coverage focus
89% in primary evidence group
Coherence
0.88
Review state
published
Refreshed
Updated Oct 29, synthesized Oct 29. Not evidence time.
Cluster type
story
Member signals
9
Situation id
45e3d784-4d03-42f2-b4c6-7d11f2db1cbd
Last evidenceOct 29, 08:05 UTC
Last successful evaluationSuccessful evaluation timestamp unavailable (legacy)
Last attempt·

Discussion

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