Source: Help Net Security

5 stories in the last 30d

DomainAll Cyber AIWindow24h 3d 7d 30d AllIn the wild Important only Show duplicates

CategoryAll Tools 57 Industry 51 AI safety & security 20 Exploit / PoC 19 Phishing & fraud 15 Data breach 14 Research 14 AI tools & infra 11 AI industry 11 Threat actor 10 Malware 9 Vulnerability 9 Advisory 8 Policy & legal 6

SeverityAll critical 10 high 41 medium 39 low 2 info 174 source: Help Net Security ✕

Ransomware negotiation tactics have turned into a business process

Intel 471's Dave Ross details ransomware negotiation tactics, with demands typically set at 1-5% of annual revenue and specialized criminal service roles.

In a Help Net Security video, Intel 471 Senior Director Dave Ross explains how ransomware groups research a victim's revenue and insurance coverage, run test decryptions to prove they hold a working key, and set demands at roughly 1% to 5% of annual revenue. He describes negotiation dynamics with shifting deadlines and a criminal service economy supplying language skills, data review, and legal analysis. Multi-extortion methods include data theft, DDoS attacks, and direct contact with customers and journalists.

Help Net SecuritySep 8, 05:40 UTC · 7d agoRansomware

Berlin refuses to be blackmailed after network breach

Rhysida extorts Berlin's state government after stealing 5.79 TB across 1.44 million files, demanding roughly 2 million euros in bitcoin.

Berlin's state government confirmed an extortion attempt after data theft from its administrative network between August 7 and 12, with affected departments disconnected only on August 14. The Rhysida ransomware gang lists 5.79 TB across 1.44 million files on its leak site, including HR files, contracts, 148 IBANs, personal data on 12,076 individuals, and plaintext credentials from internal systems including Berlin's leadership. Der Spiegel reports a 30 bitcoin demand of about 2 million euros; officials say the city will not pay and investigators include the State Criminal Police Office and federal agencies. Forensics revealed additional leaks in the Senate Department for Mobility, Transport, Climate Protection and the Environment, while the Berlin House of Representatives election environment is reported secure.

Help Net SecuritySep 1, 00:00 UTC · 14d agoRansomware in the wild

GentleKiller targets more than 400 security processes across 48 products

ESET details the Gentlemen ransomware gang's in-house GentleKiller EDR-killer framework targeting over 400 security processes across 48 products, supplied to affiliates.

ESET analyzed the Gentlemen ransomware gang's in-house GentleKiller EDR-killer framework, confirmed through an internal data leak from May 2026. The framework has at least eight variants impersonating legitimate security products and abusing vulnerable or malicious kernel drivers, targeting more than 400 process names across 48 security products. Gentlemen emerged in late 2025, became one of the five most active ransomware gangs in Q1 2026, offers affiliates a 90% ransom share, and practices double extortion using Go-based and C-based ESXi encryptors. The suite also reuses outside tools including HexKiller, ThrottleBlood, and HavocKiller, unified by a shared evasion layer that mimics well-known security vendors.

Help Net SecurityAug 24, 04:22 UTC · 22d agoRansomware in the wild

Ransomware attackers are zeroing in on mid-market companies

Black Kite found mid-market firms were 73% of disclosed ransomware victims in North America and Europe from January 2023 to June 2026.

Black Kite analyzed 13,336 publicly disclosed ransomware and data-extortion incidents with known revenue between January 2023 and June 2026, finding mid-market companies (annual revenue $10M-$1B) accounted for 73% of victims in North America and Europe, consistently between 72% and 75%. Manufacturing was the most affected sector, followed by professional, scientific, and technical services and construction. Of more than 120,000 assessed mid-market organizations, 54.7% had at least one significant patch-management issue on a public-facing system, over a quarter had a known-exploited vulnerability, and nearly one-third had stealer-log credential findings.

Help Net SecurityAug 24, 00:00 UTC · 22d agoRansomware

Medusa ransomware gang has hit over 500 organizations, CISA warns

FBI, CISA, and HHS warn Medusa ransomware has hit over 500 organizations across critical infrastructure since June 2021, using phishing and unpatched flaws.

An updated joint advisory from CISA, FBI, and HHS states Medusa ransomware has affected more than 500 organizations, spanning healthcare, defense, manufacturing, government, IT, financial services, education, insurance, and legal sectors. Since early 2023 Medusa has operated a ransomware-as-a-service affiliate model and buys access from initial access brokers for $100 to $1 million. Affiliates gain entry via phishing and unpatched internet-facing software, exploiting newly disclosed flaws in ScreenConnect, Fortinet EMS, Fortra GoAnywhere, and BeyondTrust within 24 hours. The group runs double extortion, giving victims 48 hours before leak-site publication, with $10,000 in cryptocurrency buying a one-day delay.

Help Net SecurityAug 19, 00:00 UTC · 27d agoRansomware in the wild