Was Librería Santa Fe hit by ransomware?

Librería Santa Fe was listed by the thegentlemen ransomware operation (Argentina), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the thegentlemen ransomware group?

thegentlemen is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Librería Santa Fe breach?

thegentlemen published data attributed to Librería Santa Fe. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Librería Santa Fe APS S.R.L.

listed as Librería Santa Fe · Claimed by Thegentlemen · listed 20 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedSep 15, 2026
Data leakeddate unknown

At a glance

Group: Thegentlemen
Status: Data leaked
Country: Argentina
Sector: Retail & E-Commerce
Listed on leak site: Sep 15, 2026

About the victim

AI dossier — public-source company profile

Librería Santa Fe APS S.R.L. is an Argentine book retailer and distributor founded in 1996, operating a chain of bookstores in Buenos Aires named after Avenida Santa Fe, the city's historic book district. The company operates both retail locations and B2B distribution of books and stationery to schools and institutions across Argentina, with some export operations linked to Italy.

Industry: Book Retail & Distribution
Address: Buenos Aires, Argentina (Barrio Norte, near Avenida Santa Fe)
Founded: 1996

Attack summary

Severity: low — Disclosure listing only with no proof files, no data inventory details, no confirmation of encryption or exfiltration, and no stated operational impact.

The threat actor claims to have compromised Librería Santa Fe. No specific details on encryption, exfiltration, or data types are provided in the disclosed leak post.

low

What the group claims

santafelibros.com.ar Librería Santa Fe APS S.R.L. is an Argentine book retailer and distributor from Buenos Aires — founded 1996 (SIC 5942 Book Stores, Active status), operating a chain of bookstores (named after Avenida Santa Fe, the city's legendary book district in Barrio Norte) plus B2B book/stationery distribution to schools and institutions across Argentina, with traces in Italian business aggregators (export/Italy-linked operations). Classic family bookselling business — pre-Amazon era model: retail + distribution. Bottom line: a Buenos Aires book chain riding the avenue that made the city UNESCO's 2011 World Book Capital.

Sources

Victim sitesantafelibros.com.ar

Source

Indexed 20 hours 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 thegentlemen

thegentlemen is a ransomware group that emerged in September 2025, operating with apparent financial motivations based on their broad targeting of commercial sectors. The group has documented 267 victims across multiple countries, with primary focus on the United States, Thailand, France, Brazil, and India. Their targeting strategy demonstrates a preference for high-value sectors including manufacturing, technology, healthcare, and financial services organizations. Given the group's recent emergence and limited public documentation from established threat intelligence sources such as CISA, FBI, or major security research firms, specific details regarding their country of origin, operational structure, attack methodologies, encryption techniques, and whether they employ ransomware-as-a-service models remain unclear. The relatively high victim count of 267 in a short operational timeframe since September 2025 suggests either an aggressive campaign pace or potential inflation of victim numbers through affiliate operations, though without corroborating intelligence reports, the group's exact operational capabilities and notable campaigns cannot be definitively established. Current intelligence indicates the group remains active as of late 2025, though comprehensive threat profiling requires additional validated reporting from authoritative cybersecurity sources. The group has been linked to 868 public disclosures across our corpus. First observed on a leak site on September 9, 2025; most recent post September 15, 2026. The operation is currently active.

Also tracked as: the gentlemen.

Timeline of this disclosure

September 15, 2026Librería Santa Fe listed by thegentlemen on the group's public leak site

Other recent disclosures by thegentlemen

thegentlemen has been linked to 868 public victims on Darkfield. A sample of the most recent:

See the full thegentlemen dossier →

Sector and geography

This disclosure adds to ransomware activity in the Retail & E-Commerce sector, which has 21 disclosures indexed across all operators we track. Geographically, Librería Santa Fe is reported in Argentina, a country with 32 ransomware disclosures in our corpus.

If your organisation is affected

A listing by thegentlemen means Librería Santa Fe 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.
Monitor for the data appearing on thegentlemen'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.