Ransomware needs a way in. Stolen credentials are the cheapest one.

brooklyn group Ransomware Attack

Ransomware victimRansomed

killsec3Group

—Country

Feb 4, 2026Discovered

Overview

View group profile

Industry

Retail & E-Commerce

Discovered

8 months ago

Confidence

70%

Severity

Medium

Status

Claimed

Threat group

killsec3

Total victims

205

First seen

Sep 2025

Last seen

Jul 2026

Threat level

2.8/10

Aggressiveness5/10

Lethality0/10

Criticality3.3/10

Status breakdown

Data Leaked0.5%1

Negotiating1.0%2

Claimed

this victim

98.5%202

Targeted sectors

Education Energy & Utilities Financial Services Government & Defense Healthcare Hospitality Manufacturing Other Professional Services Retail & E-Commerce Technology Transportation

Victim's position within group

Industry

Retail & E-Commerce

Known target sector

Other victims

View all (205)

Same group · killsec3

cashcowboy
—
Claimed
Bulwark Exterminating
—
Claimed
origins ivf
—
Claimed
Certus
Mexico
Claimed
Ace Hospital
India
Claimed
DSD Law Firm
—
Claimed

Group activity

Monthly attacks · killsec3

205

total · avg 20.5/mo