As of Tuesday, June 23, 2026, the AI cybersecurity threat landscape is showing elevated activity across 147 tracked stories. The dominant themes today are Vulnerabilities & CVEs (41 stories), AI & LLM Threats (34 stories), and Data Breaches (21 stories). AI and LLM-based threats are particularly active with 34 stories covering topics such as prompt injection, model exploitation, deepfake campaigns, and AI-assisted attack tooling. 16 CVEs are being tracked across today's stories, including CVE-2026-47729, CVE-2024-40766, CVE-2021-22681, CVE-2024-36401 and 12 more. Each CVE badge below links directly to the NVD advisory. ⚠️ 23 stories involve critical severity, active exploitation, or zero-day conditions. Security teams should prioritize review of flagged items and verify patch status immediately.
OpenAI has expanded its Daybreak cybersecurity initiative with a new suite of tools and partnerships. The post OpenAI Refocuses Cybersecurity Efforts on Patching Over Discovery appeared first on SecurityWeek .
Using a custom sniffer, the threat actor has captured over 110 million credentials since at least February 2026. The post Russian Initial Access Broker Behind FortiBleed Campaign appeared first on SecurityWeek .
Xsolis disclosed a breach affecting 1.4M people after a phishing attack exposed personal and health data from its hospital clients’ systems. Healthcare tech company Xsolis, Inc. has disclosed a data breach impacting nearly 1.4 million individuals. The…
Hackers stole customers’ names, addresses, email addresses, phone numbers, and account information. The post Canadian Electricity Provider London Hydro Discloses Data Breach appeared first on SecurityWeek .
Omada has introduced Omada Identity Sovereign, a new solution that enables organizations to take direct control over where and how their identity governance is deployed. The solution addresses the digital sovereignty requirements, including data, operational,…
Hack The Box (HTB) has announced new capabilities to help security leaders gain greater visibility into skills, performance and operational readiness. As AI transforms cyberattacks and cybersecurity operations, HTB is expanding its cyber readiness platform to…
Mavenir has announced its Agentic Service Assurance Framework, a TM Forum IG1251/IG1453-aligned, multi-agent system that automates complex network operations across multiple domains without replacing existing systems. The framework pairs an Intent…
OpenAI expanded Daybreak, its cybersecurity initiative that combines AI models, Codex Security, security researchers, maintainers, industry partners, and access controls to support vulnerability discovery and remediation. Organizations can use the initiative…
F5 has introduced the F5 AI Security Platform to give CISOs continuous visibility, governance, and protection across enterprise AI applications, models, agents, and the APIs connecting them. F5 also announced the acquisition of SurePath AI, as a key component…
The Five Eyes Alliance has published a rare call to action for organizations facing AI threats
Attackers are abusing Outlook Groups and Microsoft 365 collaboration features to make phishing campaigns appear routine, according to Fortra. “The technique shifts malicious intent away from a single phishing email into a trusted productivity workflow. A user…
Attackers backdoored ShapedPlugin Pro updates, deploying malware that steals credentials, 2FA secrets, and grants full site access. If you installed a ShapedPlugin Pro plugin between April and June 2026 and kept it updated, your site may be compromised. Not…
Squidbleed is a 29-year-old Squid Proxy flaw that can leak credentials, tokens, and other users’ HTTP data through a memory overread. Researchers at Calif.io have disclosed CVE-2026-47729, a memory leak vulnerability in Squid Proxy that was introduced in 1997…
Threat actors gained access to personal and protected health information that Xsolis received from its clients. The post Xsolis Data Breach Affects 1.4 Million Individuals appeared first on SecurityWeek .
Direct messages sent via WhatsApp are being used to distribute malicious Visual Basic Script (VBScript) files that lead to the installation of legitimate Remote Monitoring and Management (RMM) software. Per findings from Kaspersky, the active campaign is…
A research team has built a system that teaches AI agents to hunt for software bugs by writing the audit method down as plain text. The system, called EVOHUNT, keeps the underlying AI model fixed and improves only an external “playbook” that tells the agent…
Smart TVs in living rooms run small apps that show fish tanks, clocks, solitaire games, and slideshows of puppies. A share of those apps can also send other people’s internet traffic out through the home connection. Spur Intelligence scanned 6,038 apps across…
OpenAI on Monday said it's releasing an improved version of its GPT‑5.5‑Cyber model to trusted defenders as part of the Daybreak initiative the artificial intelligence (AI) company announced last month. Calling GPT‑5.5‑Cyber its "strongest model yet for…
The vulnerability 
An ongoing malware campaign is targeting WhatsApp users in multiple countries with deceptive messages that push VBScript files, leading to remote system access. [...]
A newly disclosed FFmpeg flaw dubbed 'PixelSmash' could be exploited for remote code execution on Jellyfin servers under certain conditions, and can also trigger a denial-of-service condition in applications like Kodi, Emby, Nextcloud, PhotoPrism, and OBS…
Security firm SOCRadar says the large-scale FortiBleed campaign targeting Fortinet FortiGate devices used custom sniffers to harvest authentication secrets from compromised firewalls and steal credentials. [...]
Multiple WordPress plugins from ShapedPlugin were compromised in a supply chain attack after unknown threat actors managed to tamper with the official release channels and push backdoor code. "Attackers compromised the vendor's build and distribution…
A vulnerability chain dubbed AutoJack in Microsoft's AutoGen Studio interface for prototyping AI agents could let attackers manipulate an agent into executing arbitrary commands on its host system simply by visiting a malicious webpage. [...]
Amid concerns about AI models’ cybersecurity capabilities, OpenAI revealed an improved version of GPT-5.5-Cyber and its “Patch the Planet” initiative to fix open-source software bugs.
Cybersecurity researchers have disclosed details of four vulnerabilities in Dify, an open-source agentic workflow platform with more than 146,000 GitHub stars, that could allow attackers to stealthily read artificial intelligence (AI) conversions from other…
ESET details GentleKiller, the EDR-killer framework the Gentlemen ransomware gang gives affiliates
A heap over-read in the Squid web proxy can leak another user's cleartext HTTP request, including any credentials or session tokens it carries, to anyone already allowed to send traffic through the same proxy. The bug traces to a 1997 FTP-parsing change and…
The incident occurred early Saturday when at least a dozen unauthorized alerts were sent through Brazil's Civil Defense Alert system, a platform designed to warn residents about imminent threats such as floods, landslides and other natural disasters.
Apple BootROM exploit exposes unpatchable USB flaw on A12 and A13 devices
Senate testimony claims Anthropic’s Mythos AI breached NSA and Cyber Command systems in hours, prompting a U.S.-ordered shutdown. On June 12, the Trump administration directed Anthropic to restrict access to Fable 5 and Mythos 5, its two most capable models,…
Squidbleed, discovered with the aid of Claude Mythos Preview, has been described as a Heartbleed-style vulnerability. The post Decades-Old Squid Proxy Flaw ‘Squidbleed’ Can Expose User Data appeared first on SecurityWeek .
Earlier this month, I spoke at the Gartner Security & Risk Management Summit about a blind spot most security programs are still not accounting for - how attackers are circumventing AI security programs by using legacy infrastructure to hijack AI agents. AI…
North Korean threat actor Sapphire Sleet has been linked to a supply chain attack targeting Mastra, according to Microsoft security researchers
At least four cybersecurity firms confirmed they have been affected by a breach of business intelligence platform Klue via Salesforce integration
From fake tickets to cloned websites, AI is magnifying World Cup scams. Can fans distinguish between what’s real and what’s not?
A new report from INTERPOL has revealed a "dramatic increase" in cybercrime in Asia and the South Pacific, fueled by rapid digitalization, internet penetration, new technologies, organized criminal networks, and a disparity in cybersecurity maturity.…
Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter OptinMonster supply chain attack hits 1.2 million sites Public and Private Medical Community Targeted by…
Microsoft has attributed a recent Mastra AI supply chain attack that compromised more than 140 npm packages to the North Korean hacking group Sapphire Sleet, also known as BlueNoroff. [...]
Microsoft researchers have detailed an exploit chain, named AutoJack, that turns an AI browsing agent into a delivery vehicle for remote code execution. Steer the agent to load an attacker's web page, and that page's JavaScript can reach a privileged local…
Dutch law enforcement authorities, along with counterparts from Canada , Germany, and the U.S., have disrupted malicious infrastructure associated with SocGholish and cleaned up nearly 15,000 infected WordPress websites. "With these actions we deprive…
AI agents can access data, trigger workflows, deploy code, and interact with critical business systems, often with little oversight. Token Security breaks down why AI agents are becoming a new identity and governance challenge. [...]
An international operation targeted the SocGholish botnet, which has been linked to the Russia-based cybercrime group Evil Corp.
Modern phishing attacks, including Device Code phishing, can undermine MFA protections and grant attackers access to corporate accounts without stealing passwords. This webinar explores how behavioral AI can help security teams detect compromised accounts…
Introduction The average enterprise security team has 40 or more security tools, giving a lot of visibility into internal telemetry and asset data. But often, these tools are working in siloes, generating (overlapping) alerts and data. And yet, breach dwell…
Working with frontier AI models, this new platform aims to help discovering, prioritizing, validating and remediating code vulnerabilities
The first wave of enterprise AI concern was straightforward. It was simply employees pasting sensitive data into public AI tools. Security teams responded with usage policies, domain blocks, and data loss prevention rules. That response made sense at the…
I detected an interesting phishing email this morning. It targets a major Belgian bank: 
The nonprofit Human Rights Watch obtained export licensing records covering 2018 through 2023, which show the Bulgarian government allowed the surveillance firm Circles to peddle the tech to law enforcement and intelligence agencies in several countries known…
For the past four years, a sprawling Android-based botnet called Popa has forced millions of consumer TV boxes to relay Internet traffic linked to advertising fraud, account takeovers, and mass data-scraping efforts. This week, researchers from multiple…
If an autonomous AI agent interacts with your company's core intellectual property today, can your security team instantly name the person who authorized it? For most enterprises, the answer is a simple no. The rush to adopt internal AI tools has left a…
The internet did not break this week. It got used exactly as designed, which is worse. Searches were siphoned through shady browser add-ons. AI chat links turned into malware delivery paths. macOS attacks ran in memory and left almost nothing behind. Cloud…
A Rust crypto clipper hides behind fake GitHub stars and AI-narrated YouTube videos
Analysis of chatter on underground forums by Sophos finds that hackers fear AI could take work away from them
[This is a Guest Diary by Adam Nason, an ISC intern as part of the SANS.edu BACS program] 
An unknown threat actor has been observed leveraging paid or promoted posts on legitimate news websites to drum up buzz for their warez, according to new findings from Check Point Research. The threat actor also has at their disposal a dedicated WordPress…
Nisos infiltrated a North Korean IT-worker fraud cell running on AI interviews and a US laptop farm
Cybersecurity researchers have flagged a "coordinated malware campaign" on the JetBrains Marketplace that has published no less than 15 malicious plugins capable of exfiltrating artificial intelligence (AI) provider keys. "Every plugin poses as an AI coding…
The rise of AI-assistants and applications in the enterprise has seen a 93% increase in employees attempting to upload sensitive data, bringing security challenges
Filigran survey at Infosecurity Europe 2026 reveals AI-powered attacks as the top concern, with false positives, alert fatigue and manual processes draining security teams
SANS Institute study finds few SOCs have built AI into defined workflows, despite widespread adoption
As many as 145 npm packages associated with the Mastra namespace ("@mastra/*"), a popular open-source JavaScript and TypeScript framework for building artificial intelligence (AI) applications, have been compromised as part of a software supply chain attack…
A flaw in the Google Cloud Vertex AI SDK for Python let an attacker with no access to a victim's project hijack the victim's machine learning model upload and run code inside Google's serving infrastructure. Palo Alto Networks Unit 42, which found and…
The US government crackdown on Anthropic’s Claude Fable 5 and Mythos 5 hides a glaring truth: AI models with advanced hacking capabilities will soon be the norm.
Athena is a new an industry coalition to fix the vulnerabilities frontier AI models find before attackers can exploit them
A default low-privilege account on a LiteLLM proxy can climb to full admin and run code on the server by chaining three vulnerabilities, researchers at Obsidian Security disclosed LiteLLM is a widely deployed open-source AI gateway that brokers calls to more…
Access to two Anthropic large language models, Mythos 5 and Fable 5, has effectively been banned to any non-US nationals by the Trump administration
Government departments find hundreds of vulnerabilities after testing frontier models
Plus: AI bug hunting fuels Microsoft’s biggest-ever Patch Tuesday, ShinyHunters ransomware gang exploits an Oracle zero-day, and more.
A WIRED investigation found dozens of “nudified” deepfake images and videos on Grok's website, including nonconsensual depictions of celebrities and at least one prominent US politician.
Fake AI guides hide a multi-stage chain that drops AsyncRAT, with signs of AI-assisted coding
Organizations are aware of the challenges that new technologies like AI bring: but cybersecurity staff struggle to make time for the required training during working hours
The new open-source project could serve as the basis for a future of apps with features as complex as Slack, Discord, or Google Docs—but with added protection against surveillance.
Tenet Security researchers reveal how new “agentjacking” attacks could trick coding agents into executing arbitrary code
“Defenders cannot afford to take weeks to patch,” one Cybersecurity and Infrastructure Security Agency official warned on Wednesday.
A cybercrime group known as The Gentlemen has emerged as the second most active ransomware gang by victim count, rapidly attracting a talented pool of hackers through an aggressive recruitment strategy that promises affiliates 90 percent of any ransom paid by…
Anthropic unveils Claude Mythos 5 and Fable 5, a restricted-access frontier AI model and guardrailed version for everyone to use
Microsoft today released software updates to plug nearly 200 security holes across its Windows operating systems and supported software, a record number of fixes for the company's monthly Patch Tuesday cycle. Nearly three dozen of those bugs earned…
Most dev teams use AI coding assistants but only 30% have full governance in place
OpenAI brings Lockdown Mode and Active Sessions to ChatGPT to curb prompt injection data theft
At Infosecurity Europe 2026, OWASP’s Ariel Fogel warned that prompt injection remains an “unresolved problem” within generative AI architecture
Meta confirms an AI tool vulnerability led to unauthorized access to Instagram accounts after a failure in email verification during password reset
Lloyds Banking Group shared its approach for securing agentic AI workflows, with a mix of hands on experimentation and cross functional governance
The OWASP agentic AI security framework helps organizations assess governance maturity vs adoption and adjust governance as needed
Ox Security field CTO, Boaz Barzel, makes the case for vibe security to tackle AI agent coding risks
Microsoft Detection and Response Team (DART) details how it has uncovered malicious AI applications as cyber criminals manipulate organizations adopting AI tools
A Bugcrowd researcher has unveiled ExploitBench, an independent benchmark of AI models for vulnerability exploitation
Proton uses machine learning models to detect abuse of its services – especially email addresses used by cybercriminals
Inaugural Infosecurity Europe Cyber Startup Award Winner Impresses Panel with Ability Help Prioritize Vulnerabilities in AI era
Trump's executive order invites voluntary pre-release review of frontier AI models
Anthropic widens Project Glasswing access to 150 more firms as patching becomes the bottleneck
The emergence of AI models capable to autonomously find and fix vulnerabilities at scale is having a significant impact on patching management, experts say
Halcyon’s Cynthia Kaiser lifts the lid on the dark web market for AI cybercrime tools
Humans still need to be part of cyber defense, but refusing to deploy AI is no longer optional against AI-enhanced cyber threats, warns Dataminr’s Joe Slowik
Bayer’s security awareness training now focuses on psychological approaches rather than technical methods for detecting social engineering
A threat actor used AI coding tools to build and test EDR evasion malware, Sophos finds
UK organizations are prioritizing AI-driven cybersecurity as 43% cite AI-powered attacks as their top risk, prompting significant investment in advanced threat defense
The Instagram accounts for the Obama White House and the Chief Master Sergeant of the U.S. Space Force were briefly defaced with pro-Iranian images and messages over the weekend, after instructions began circulating on Telegram showing how to trick Meta's "AI…
Top cybersecurity vendors said AI won't replace entry-level – only routine ticket-taking and triage
Push Security says threat actors are delivering malware hosted on chatgpt.com/s/ domain
OWASP’s new Agentic Research Council will aim to connect academic work to operational realities on agentic AI security
Sloppy AI-generated npm infostealer leaked its own GitHub token, exposing the operator
GCHQ director urges urgent business cyber action as AI and quantum reshape the threat
UK firms plan higher cyber spending as AI adoption raises security concerns
CERT-In urges 12-hour patching of exposed flaws as AI compresses exploitation timelines
The infostealer payload in this campaign collect a vast amount of data, from collaboration authentication keys to cryptocurrency wallets
AI risks threaten to permeate supply chains through unvetted code and unaudited suppliers
AI-powered vulnerability scanning leaves no excuse for unpatched bugs as the EU Cyber Resilience Act pushes firms toward secure-by-design software
Digital.ai data reveals 87% of apps were attacked over the past year
The UK’s National Cyber Security Centre is helping organizations to understand agentic AI security risks
The UK’s financial authorities have set expectations for the sector on cybersecurity and operational resilience
Semperis study finds 74% of organizations believe AI will increase attacks on identity infrastructure
The Information Commissioner’s Office has released new guidance on how to mitigate the risk of AI-powered attacks
The G7 Cybersecurity Working Group releases new SBOM for AI guidance, outlining seven key data clusters to boost transparency and security across AI supply chains
UK cybersecurity sector reaches £14.7bn in revenue, driven by rapid growth in AI security firms, increased investment and rising employment across the industry
Artificial intelligence platforms may be just as susceptible to social engineering as human beings, but they are proving remarkably good at finding security vulnerabilities in human-made computer code. That reality is on full display this month with some of…
With Daybreak, OpenAI wants its frontier AI models to be used to deploy secure by design software from the ground up
HiddenLayer reveals infostealer malware in a Hugging Face repository
Ontinue uncovers fake Claude Code installer pushing PowerShell stealer abusing Chrome's IElevator2
Google Threat Intelligence Group details how cybercriminals attempted to launch a campaign based around an AI-developed Zero-Day targeting open-source software
Traditional network security tools are undermining data protection, with Forrester and Capital One Software research warning AI adoption is impossible without rethinking data security
Oasis Security finds critical Cline kanban WebSocket flaw exposing AI coding agents to hijack
Commercial AI models were used to help plan and conduct cyber-attack against operational technology of a water and drainage facility, say researchers
Sophos finds fake Claude site spreading DonutLoader and a new Beagle backdoor via DLL sideloading
ISACA report warns that while AI has become the norm, many organizations are yet to formally apply safety or security policies around its use
OpenAI announced its intention to expand the Trusted Access for Cyber program for cyber defenders at the federal, state and local government levels
Claude Security enters public beta, giving enterprises AI driven code scanning with no API integration or custom agents required
A researcher from offensive security firm Theori has found a nine-year-old flaw in the Linux kernel with the help of AI
Marsh’s 2026 People Risks survey finds cyber‑related challenges dominate, as cyber‑threat literacy tops risks and cyber and AI skills shortages rise
Researchers uncover a malicious npm dependency linked to an AI‑assisted code commit that steals sensitive data and exposes crypto wallets
AI tools are not just creating new vulnerabilities, they are reviving old security failures, warned Jurgen Kutscher, VP of Mandiant Consulting
Google Cloud’s COO advocated for combining general-purpose frontier large language models with task-specific AI agents
Google Cloud will attribute a unique cryptographic ID every AI agent that will be tied to “traceable and auditable” authorization policies
Forcepoint has found 10 new indirect prompt injection attacks targeting AI agents
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Data exposure, operational disruption and financial losses among issues faced by businesses struggling with the rapid rise of AI agents, warns Cloud Security Alliance report
AI models are making rapid gains in vulnerability research and exploit development, raising new cybersecurity risks, a Forescout study finds
OpenAI’s new frontier model focused on cybersecurity comes following Anthropic’s launch of Claude Mythos Preview and Project Glasswing
<h2><strong>Advisory at a Glance</strong></h2> <table> <tbody> <tr> <th>Title</th> <td>Iranian-Affiliated Cyber Actors Exploit Programmable Logic Controllers Across US Critical Infrastructure</td> </tr> <tr> <th>Original Publication</th> <td>April 7,…
<h2><strong>Summary</strong></h2> <p><strong>Note:</strong> This joint Cybersecurity Advisory is being published as an addition to the Cybersecurity and Infrastructure Security Agency (CISA) May 6, 2025, joint fact sheet <a…
<h2><strong>Advisory at a Glance</strong></h2> <table> <tbody> <tr> <td>Executive Summary</td> <td>CISA began incident response efforts at a U.S. federal civilian executive branch (FCEB) agency following the detection of potential malicious activity…
<h2><strong>Executive summary</strong></h2> <p>People’s Republic of China (PRC) state-sponsored cyber threat actors are targeting networks globally, including, but not limited to, telecommunications, government, transportation, lodging, and military…
<h2><strong>Executive Summary</strong></h2> <p>This joint cybersecurity advisory (CSA) highlights a Russian state-sponsored cyber campaign targeting Western logistics entities and technology companies. This includes those involved in the coordination,…
2.5 million people were affected, in a breach that could spell more trouble down the line.
Researchers uncover a watering hole attack likely carried out by APT TA423, which attempts to plant the ScanBox JavaScript-based reconnaissance tool.
Over 130 companies tangled in sprawling phishing campaign that spoofed a multi-factor authentication system.