Jailbroken AIs are helping cybercriminals to hone their craft

Cybercriminals are bypassing the guardrails that are supposed to keep AI models from carrying out criminal activities, according to researchers. We've seen the misuse of AI models by cybercriminals growing rapidly over the past several years, shaping a new era of digital threats. Early on,...

The Dark Side of the Web: Towards Understanding Various Data Sources in Cyber Threat Intelligence

Cyber threats have become increasingly prevalent and sophisticated. Prior work has extracted actionable cyber threat intelligence CTI, such as indicators of compromise, tactics, techniques, and procedures TTPs, or threat feeds from various sources: open source data e.g., social networks, internal...

Black Basta: The Fallen Ransomware Gang That Lives On

After a series of setbacks, the notorious Black Basta ransomware gang went underground. Researchers are bracing for its probable return in a new form...

Lucid PhaaS Hits 169 Targets in 88 Countries Using iMessage and RCS Smishing

A new sophisticated phishing-as-a-service PhaaS platform called Lucid has targeted 169 entities in 88 countries using smishing messages propagated via Apple iMessage and Rich Communication Services RCS for Android. Lucid's unique selling point lies in its weaponizing of legitimate communication...

Authorities Seize Domains of Popular Hacking Forums in Major Cybercrime Crackdown

An international law enforcement operation has dismantled the domains associated with various online platforms linked to cybercrime such as Cracked, Nulled, Sellix, and StarkRDP. The effort, which took place between January 28 and 30, 2025, targeted the following domains - www.cracked.io...

Selling Ransomware Breaches: 4 Trends Spotted on the RAMP Forum

The sale and purchase of unauthorized access to compromised enterprise networks has become a linchpin for cybercriminal operations, particularly in facilitating ransomware attacks. Underground forums are sharing guidelines on breaching networks and selling the access they obtain, leaving the...

NationalPublicData.com Hack Exposes a Nation’s Data

A great many readers this month reported receiving alerts that their Social Security Number, name, address and other personal information were exposed in a breach at a little-known but aptly-named consumer data broker called NationalPublicData.com. This post examines what we know about a breach...

Cyber Threat Intelligence: Illuminating the Deep, Dark Cybercriminal Underground

Learn about critical threats that can impact your organization and the bad actors behind them from Cybersixgill's threat experts. Each story shines a light on underground activities, the threat actors involved, and why you should care, along with what you can do to mitigate risk. The deep and dar...

Episode 2: Behind the Scenes of a Tailor-Made Massive Phishing Campaign Part 2

Executive Summary Last summer, we investigated a massive, global phishing campaign impersonating almost 350 legitimate companies. Our continued investigation into this expansive phishing campaign revealed leaked backend source code, shedding light on the infrastructure behind the operation. This...

calgaryundergroundfilm.org Cross Site Scripting vulnerability OBB-3932909

Following the coordinated and responsible vulnerability disclosure guidelines of the ISO 29147 standard, Open Bug Bounty has: a. verified the vulnerability and confirmed its existence; b. notified the website operator about its existence. Technical details of the vulnerability are currently hidde...

LockBit Ransomware's Darknet Domains Seized in Global Law Enforcement Raid

Update: The U.K. National Crime Agency NCA has confirmed the takedown of LockBit infrastructure. Read here for more details. An international law enforcement operation has led to the seizure of multiple darknet domains operated by LockBit, one of the most prolific ransomware groups, marking the...

London Underground Is Testing Real-Time AI Surveillance Tools to Spot Crime

In a test at one station, Transport for London used a computer vision system to try and detect crime and weapons, people falling on the tracks, and fare dodgers, documents obtained by WIRED show...

The evolution of the Kuiper ransomware

Kuiper Ransomware’s Evolution By Max Kersten · January 17, 2024 The Golang-based Kuiper ransomware is presented as an opportunity for other criminals to make money by ransoming one or more targets. Additionally, RobinHood, the actor behind Kuiper, states that help with operations can be provided...

Beware! YouTube Videos Promoting Cracked Software Distribute Lumma Stealer

Threat actors are resorting to YouTube videos featuring content related to cracked software in order to entice users into downloading an information stealer malware called Lumma. "These YouTube videos typically feature content related to cracked applications, presenting users with similar...

Syrian Hackers Distributing Stealthy C#-Based Silver RAT to Cybercriminals

Threat actors operating under the name Anonymous Arabic have released a remote access trojan RAT called Silver RAT that's equipped to bypass security software and stealthily launch hidden applications. "The developers operate on multiple hacker forums and social media platforms, showcasing an...

berlin-underground.com Improper Access Control vulnerability OBB-3794065

Following the coordinated and responsible vulnerability disclosure guidelines of the ISO 29147 standard, Open Bug Bounty has: a. verified the vulnerability and confirmed its existence; b. notified the website operator about its existence. Technical details of the vulnerability are currently hidde...

Researchers Expose Prolific Puma's Underground Link Shortening Service

A threat actor known as Prolific Puma has been maintaining a low profile and operating an underground link shortening service that's offered to other threat actors for at least over the past four years. Prolific Puma creates "domain names with an RDGA registered domain generation algorithm and us...

Stealer for PIX payment system, new Lumar stealer and Rhysida ransomware

Introduction As a cybersecurity company, Kaspersky is constantly dealing with known and brand-new malware samples. As part of our crimeware reporting service, we provide our customers with technical reports on the evolution of existing crimeware families, as well as newly emerging ones. In this...

BunnyLoader: New Malware-as-a-Service Threat Emerges in the Cybercrime Underground

Cybersecurity experts have discovered yet another malware-as-a-service MaaS threat called BunnyLoader that's being advertised for sale on the cybercrime underground. "BunnyLoader provides various functionalities such as downloading and executing a second-stage payload, stealing browser credential...

Vietnamese Cybercriminals Targeting Facebook Business Accounts with Malvertising

Malicious actors associated with the Vietnamese cybercrime ecosystem are leveraging advertising-as-a-vector on social media platforms such as Meta-owned Facebook to distribute malware. "Threat actors have long used fraudulent ads as a vector to target victims with scams, malvertising, and more,"...