25 Mar, 2025

Microsoft Teams tactics, malware connect Black Basta, Cactus ransomware

New research has uncovered further links between the Black Basta and Cactus ransomware gangs, with members of both groups utilizing the same social engineering attacks and the BackConnect proxy malware for post-exploitation access to corporate networks. In January, Zscaler discovered a Zloader malware sample that contained what appeared to be a new DNS tunneling feature. Further research by […]

3 mins read

Southern Water says Black Basta ransomware attack cost £4.5M in expenses

United Kingdom water supplier Southern Water has disclosed that it incurred costs of £4.5 million ($5.7M) due to a cyberattack it suffered in February 2024. Southern Water is a private utility company in southern England, providing water services to 2.7 million customers and wastewater services to over 4.7 million customers across Kent, Sussex, Hampshire, and the […]

2 mins read

Black Basta ransomware gang’s internal chat logs leak online

An unknown leaker has released what they claim to be an archive of internal Matrix chat logs belonging to the Black Basta ransomware operation. ExploitWhispers, the individual who previously uploaded the stolen messages to the MEGA file-sharing platform, which are now removed, has uploaded it to a dedicated Telegram channel. It’s not yet clear if ExploitWhispers […]

3 mins read

Ransomware gangs pose as IT support in Microsoft Teams phishing attacks

Ransomware gangs are increasingly adopting email bombing followed by posing as tech support in Microsoft Teams calls to trick employees into allowing remote control and install malware that provides access to the company network. The threat actors are sending thousands of spam messages over a short period and then call the target from an adversary-controlled Office […]

4 mins read

Ascension: Health data of 5.6 million stolen in ransomware attack

​Ascension, one of the largest private U.S. healthcare systems, is notifying nearly 5.6 million patients and employees that their personal and health data was stolen in a May cyberattack linked to the Black Basta ransomware operation. The health network reported a total revenue of $28.3 billion in 2023 and operates 140 hospitals and 40 senior […]

3 mins read

BT unit took servers offline after Black Basta ransomware breach

Multinational telecommunications giant BT Group (formerly British Telecom) has confirmed that its BT Conferencing business division shut down some of its servers following a Black Basta ransomware breach. BT Group is the United Kingdom’s leading fixed and mobile telecom provider. It also provides managed telecommunications, security, and network and IT infrastructure services to customers in […]

2 mins read

Keytronic reports losses of over $17 million after ransomware attack

Electronic manufacturing services provider Keytronic has revealed that it suffered losses of over $17 million due to a May ransomware attack. The American technology company started as an Original Equipment Manufacturer (OEM) of keyboards and mice in 1969 but has since become one of the largest manufacturers of printed circuit board assembly (PCBA) worldwide, with facilities in the United […]

2 mins read