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Ransomware victim disclosure

All victims

aercap.com

Claimed by Slug · listed 2 years ago

30m
Age
since listed · data leaked

Status timeline

  1. ListedJan 18, 2024
  2. Data leakeddate unknown

At a glance

Group
Slug
Status
Data leaked
Country
Ireland
Listed on leak site
Jan 18, 2024

About the victim

AI dossier — public-source company profile

AerCap Holdings N.V. is the world's largest owner of commercial aircraft and leader in aviation leasing, headquartered in Dublin with regional offices across the US, Europe, Asia and the Middle East. The company leases aircraft, engines, and helicopters to ~300 airline customers globally, with a fleet of 1,611 aircraft, >1,200 engines, and >300 helicopters as of Q1 2026.

Industry
Aviation Leasing
Address
Dublin, Ireland

Attack summary

Severity: high — AerCap is a major publicly-listed company ($71B in assets, $18B equity) operating critical aviation infrastructure. Confirmed disclosure of data by a ransomware group against a target of this scale and sensitivity (airline operations, contracts, potentially PII of executives and customers) constitutes a significant breach, even without detailed proof inventory or ransom amount disclosed.

The Slug group claims to have attacked AerCap and exfiltrated data. No specific details on encryption, operational disruption, or data categories are provided in the disclosed excerpt.

high

What the group claims

About aercap: Our commitment to excellence is manifested by our comprehensive, innovative and tailor-made solutions that are unrivaled in the leasing industry. We are the world’s largest owners of commercial aircraft and leader in aviation leasing, providing airlines with long-term access to the most in-demand passenger and cargo aircraft, engines and helicopters.

Sources

Source

Indexed 2 years ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About Slug

Slug is an obscure ransomware group that first emerged in January 2024, appearing to operate with financial motivations typical of most ransomware actors. Based on limited public reporting, the group has maintained a very low profile with minimal documented activity since its emergence. The group's origin and potential affiliations remain unknown due to the limited scope of their operations, and there is insufficient public information to determine whether they operate as part of a ransomware-as-a-service model or as an independent entity. Attack methodology details have not been publicly documented by major security firms or government agencies, reflecting the group's minimal operational footprint and limited impact on the broader threat landscape. The group's most notable characteristic is their apparent focus on Ireland's transportation and logistics sector, though with only one documented victim, this targeting pattern may not represent a deliberate specialization. Based on available intelligence from established security researchers, Slug remains a marginal player in the ransomware ecosystem with unclear current operational status. The group has been linked to 1 public disclosures across our corpus. First observed on a leak site on January 18, 2024. The operation is currently inactive.

Timeline of this disclosure

  • January 18, 2024aercap.com listed by Slugon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Transportation/Logistics sector, which has 1,081 disclosures indexed across all operators we track. Geographically, aercap.com is reported in Ireland, a country with 43 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Slug means aercap.com appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

  • Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
  • Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
  • Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
  • Report the incident to your national CERT, NCSC-IE (Ireland), as required for your jurisdiction.
  • Monitor for the data appearing on Slug's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.