Latest cybersecurity reporting from selected sources.

A multi-stage attack on Linux devices began with an exposed F5 BIG-IP edge appliance and pivoted to an internal Confluence server for credential theft and identity compromise. Learn how the threat actor attempted Kerberos relay and lateral movement, and how Microsoft Defender detected, blocked, and unraveled the attack. The post From edge appliance to enterprise compromise: Multi-stage Linux intrusion via F5 and Confluence appeared first on Microsoft Security Blog.

AI Dependency Attack Reportedly Exposes Data and Source CodeA LiteLLM supply-chain compromise enabled attackers to harvest credentials and access internal environments at scale at Mercor. The firm was the first to confirm a LiteLLM breach, and researchers are warning about growing AI system exposure and limited visibility.

In December 2024, the popular Ultralytics AI library was compromised, installing malicious code that hijacked system resources for cryptocurrency mining. In August 2025, malicious Nx packages leaked 2,349 GitHub, cloud, and AI credentials. Throughout 2024, ChatGPT vulnerabilities allowed unauthorized extraction of user data from AI memory

How recycled passwords and poor security habits are fueling a cybercrime gold rush Partner Content If you're still using "password123" for more than one account, there's a good chance you've already exposed yourself to credential stuffing attacks — one of the most prevalent and damaging forms of automated cybercrime today. Just ask the 6.9 million users of 23andMe who discovered their personal details were compromised when cybercriminals used recycled credentials from other breaches to infiltrate their accounts.…

Flashpoint data points to a surge in data breaches fueled by compromised credentials, ransomware and exploits

Threat Actor 'Codefinger' Targets Cloud EnvironmentsA ransomware group is targeting Amazon S3 buckets, exploiting the data stored there using AWS’s server-side encryption with customer keys and demanding a ransom in exchange for the encryption key needed to unlock the data. The group uses compromised or publicly exposed AWS account credentials.

News has been making headlines over the weekend of the extensive attack campaign targeting browser extensions and injecting them with malicious code to steal user credentials. Currently, over 25 extensions, with an install base of over two million users, have been found to be compromised, and customers are now working to figure out their exposure (LayerX, one of the companies involved in

A new attack campaign has targeted known Chrome browser extensions, leading to at least 16 extensions being compromised and exposing over 600,000 users to data exposure and credential theft

Kaspersky reported a 231% surge in compromised accounts from 4.7 million in 2021 to 15.5 million in 2023

Customer Accounts Were Secured by MFA, But Contractor's Credentials Exposed DataAustralian telecom company Tangerine is blaming the compromise of a third-party contractor's credentials for exposing personal information of 232,000 customers, which had been stored in a legacy database. The breach exposed customers' names, birthdates, mobile numbers, addresses and account numbers.

A threat actor, presumably from Tunisia, has been linked to a new campaign targeting exposed Jupyter Notebooks in a two-fold attempt to illicitly mine cryptocurrency and breach cloud environments

Zendesk has alerted customers to a successful SMS phishing campaign that has exposed "service data," but details remain scarce.

An update to Raspberry Pi OS Bullseye has removed the default 'pi' user to make it harder for attackers to find and compromise Internet-exposed Raspberry Pi devices using default credentials. [...]