Microsoft has shut down a long-running malicious extension operation on the Edge Add-ons store that hid its payloads inside ordinary image and font files, then woke up days after install to steal credentials and run ad fraud. The company calls it StegoAd, a mash-up of steganography and adware, and ties 119 extensions to a single threat actor it says has been active since at least 2021.

The company says Sol matches competing systems like Mythos Preview while using only a third of the output tokens. The post OpenAI Unveils GPT-5.6 Sol as Its Most Advanced Cybersecurity AI appeared first on SecurityWeek.

A public proof-of-concept is now out for CVE-2026-55200, a critical flaw in libssh2 that lets a malicious or compromised SSH server trigger memory corruption on a connecting client, with possible code execution. No credentials, no user interaction. The bug affects every release up to and including 1.11.1 and carries a CVSS 4.0 score of 9.2. libssh2 is a client-side SSH library, not a server.

Cybersecurity researchers have uncovered two hijacked npm packages and a cluster of Go packages that are designed to deploy a Python-based information stealer on compromised Windows, Linux, and macOS hosts. "This attack avoids the most common npm execution paths through lifecycle scripts, perhaps in an attempt to remain 'compatible' with npm v12's security hardenings," JFrog said in a

Japanese telecommunications operator KDDI Corporation disclosed a data breach where threat actors gained access to one of its email systems used by five other internet service providers (ISPs) in the country. [...]

The Security Service of Ukraine (SSU) said it, together with the U.S. Federal Bureau of Investigation (FBI), uncovered a long-running campaign orchestrated by Russian intelligence services to break into the messaging accounts of government officials, military personnel, politicians, and activists in Ukraine, Europe, and the U.S. The systematic cyber attacks aimed at stealing sensitive

An agentic coding tool tasked with running a seemingly benign GitHub repository could execute a malicious payload that is invisible to both security agents and human reviewers. [...]

OpenAI on Friday released three versions of GPT-5.6, called Sol, Terra, and Luna, as a limited preview to a small number of companies as part of an ongoing engagement with the U.S. government. While Sol is the latest flagship model and the most powerful, Terra strikes a balance between efficiency and power, and Luna is fine-tuned for speed and affordability. "GPT‑5.6 Sol launches with our most

Threat actors are selling investment scam templates created using the legitimate DCloud Uni-App toolkit. The post Chinese Framework Powers 200,000 Scam Sites appeared first on SecurityWeek.

Rising threats from third-party actors are forcing institutions to play defense to protect student data from ransomware and other attacks.

The FBI and CISA are warning that a phishing campaign targeting Signal users tied to Russian intelligence services has evolved to steal Signal Backup Recovery Keys, allowing attackers to access victims' historical messages. [...]

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) is giving federal agencies until Sunday to patch a vulnerability in Cisco Unified Communications Manager Server that is being actively exploited. [...]

The FBI and CISA have updated their March warning about Russian intelligence phishing Signal accounts, and the operators have added a step: they now coax targets into handing over their Signal Backup Recovery Key. Hand it over once, and the attacker can restore the account's backup, read the private and group message history, and take over the account. Worse, the key keeps working.

Companies are still experimenting with automated AI systems to find security weaknesses, but fewer are relying on the technology.

A newly discovered cyber attack campaign has been observed delivering a previously undocumented malware family called SharkLoader that acts as a loader for deploying Cobalt Strike Beacon on compromised hosts. Kaspersky, which is tracking the activity under the moniker StrikeShark, said the campaign has targeted a diplomatic organization in Indonesia, government organizations in Taiwan,

Polymarket says it will fully reimburse customers who lost an estimated $3 million after hackers injected a malicious script into the platform's frontend following a breach at a third-party vendor. [...]

Threat actors are creating OpenAI tenants that impersonate legitimate companies and inviting employees to join them, in what appears to be a ploy to trick targets into submitting sensitive company information in chats and projects. [...]

Cisco joins a growing list of security platform providers who are betting that securing the agentic workforce means turning identity into the primary control plane.

The Open Source Sustainability Initiative's goal is to help enterprises manage and secure aging open source projects while maintaining regulatory compliance.

A Chinese-speaking advanced persistent threat (APT) actor has been linked to a new custom backdoor called TinyRCT as part of cyber attacks aimed at government entities and critical infrastructure in Southeast Asia. The activity, particularly aimed at state-owned enterprises in the energy and government sectors, has been attributed to a threat actor called CL-STA-1062, which Palo Alto Networks

Instead of eliminating jobs for early-career cyber pros, AI is creating new opportunities for candidates with strong human decision-making skills.

AWS has patched the vulnerability and published its own advisory to inform customers about the potential impact.  The post Amazon Q Flaw Enabled Cloud Credential Theft via Malicious Repositories appeared first on SecurityWeek.

Roughly two dozen companies have notified their customers of the Klue-Salesforce incident impact. The post More Klue Breach Victims Identified as Hackers Get Hacked appeared first on SecurityWeek.

Other noteworthy stories that might have slipped under the radar: Russia used Cellebrite to hack activist’s phone, Five Eyes issue urgent AI threat warning, macOS Gaslight backdoor, Scattered Spider guilty pleas. The post In Other News: Chinese Mythos-Like AI, Tata Electronics Breach, Snyk Layoffs appeared first on SecurityWeek.

AI won't replace GRC analysts, but it can eliminate much of the repetitive work they do. Anecdotes walks through building an agent that continuously monitors controls, identifies evidence gaps, and opens remediation tasks. [...]

A high-severity flaw in Amazon Q Developer let a malicious repository run commands and steal a developer's cloud credentials. The path was short: a developer opens the repo, trusts the workspace, and Amazon Q does the rest. Amazon has patched it. Tracked as CVE-2026-12957 (CVSS 8.5), the bug sat in how Amazon's AI coding assistant handled Model Context Protocol (MCP) servers. Wiz

Getting accurate visibility into IT and OT systems will be compounded by multivendor environments, misaligned update life cycles, and interoperability gaps.

A flaw in the Linux kernel's traffic-control subsystem can let a local unprivileged user gain root on affected systems. CVE-2026-46331, nicknamed "pedit COW," is an out-of-bounds write in the packet-editing action (act_pedit) that corrupts shared page-cache memory. A public, working exploit appeared within a day of the CVE assignment on June 16. Red Hat rates the flaw as

It might be taking a bit longer than usual to respond to your submissions — here's why.

The cybersecurity startup provides threat hunting, proactive detection, and behavioral security analytics. The post Nebulock Raises $25 Million for AI-Native Contextual Security appeared first on SecurityWeek.