7 tabletop exercise mistakes that sabotage incident response

This article discusses common mistakes organizations make when conducting tabletop exercises for incident response. It highlights the importance of clear objectives, realistic scenarios, and involving diverse stakeholders to ensure these simulations effectively test preparedness for cyber incidents.

Anthropic to Open Mythos AI to EU's ENISA

Anthropic's AI model, Mythos, will be made available to the European Union's Agency for Cybersecurity (ENISA) through a collaboration known as Project Glasswing. This initiative stems from close cooperation between the European Commission and Anthropic.

Dutch Police Dismantle Massive 17-Million-Device Botnet

Dutch police have successfully dismantled a massive botnet consisting of 17 million infected devices. This botnet was allegedly used to operate a residential proxy network and facilitate various cybercriminal activities.

Welcome New EFF Executive Director Nicole Ozer

The EFF welcomes Nicole Ozer as its new Executive Director. Ozer is a legal expert with extensive experience in privacy, surveillance, and AI, and has previously worked with the ACLU of Northern California.

Dragos Acquires xIoT Security Firm Phosphorus

Dragos has acquired xIoT security firm Phosphorus. This acquisition is expected to enhance asset visibility, device intelligence, and automated remediation workflows for Dragos customers.

Today’s 220-1201 CompTIA A+ Pop Quiz: It works on almost anything

This article presents a pop quiz specifically for the CompTIA A+ 220-1201 certification exam, focusing on a topic applicable to a wide range of IT systems. It is hosted on Professor Messer's website, known for providing free IT certification training resources.

The Security Growth Platform: Why MSPs Are Moving Beyond vCISO Tools

Managed Service Providers (MSPs) are evolving beyond basic vCISO (virtual Chief Information Security Officer) tools, which previously focused on assessments, advisory, and reporting. The industry is shifting towards 'Security Growth Platforms' to meet the expanding needs of MSPs and Managed Security Service Providers (MSSPs).

Microsoft fixes KB5089549 Windows security update install issues

Microsoft has released a fix for installation problems affecting the May 2026 Windows 11 security update, identified as KB5089549. The update was experiencing installation failures, often accompanied by the error code 0x800f0922, preventing users from successfully applying the security patch.

Press Release: CSO30 ASEAN & Hong Kong Awards 2026 open for nominations

The CSO30 ASEAN & Hong Kong Awards are now open for nominations for 2026, recognizing cybersecurity leaders and teams for their contributions to regional resilience. The awards aim to highlight impactful achievements in strengthening cyber posture, influencing strategic decisions, and building ecosystem partnerships.

YARA-X 1.17.0 Release, (Sun, May 31st)

YARA-X, a popular tool for malware analysis and threat hunting, has released version 1.17.0. This update includes five performance enhancements and one bug fix, aiming to improve the efficiency of its pattern-matching capabilities.

Dutch Authorities Dismantle Botnet Linked to 17 Million Infected Devices

Dutch authorities have successfully dismantled a large botnet comprising at least 17 million infected devices, including computers, tablets, smartphones, and IoT devices. The operation, conducted by the Dutch Politie and the National Cyber Security Center (NCSC), involved taking down over 200 servers used to control the bot network.

Friday Squid Blogging: Another Squid

This post, titled "Friday Squid Blogging: Another Squid," serves as a recurring informal update and discussion thread for readers of Schneier on Security. It mentions a "West Country legend" named Squid and encourages readers to discuss other security news stories not covered by the author.

Name That Toon: Mark of (Cybersecurity) Progress

Dark Reading is celebrating its 20th anniversary by asking readers to submit cybersecurity-related captions for a cartoon. The initiative aims to reflect on the progress and evolution of the cybersecurity industry over the past two decades.

DNS-AID will make AI agents easier to discover, says Linux Foundation

The Linux Foundation is launching DNS-AID, an open-source project to standardize how AI agents discover and communicate with each other using existing DNS infrastructure. This aims to provide a secure and vendor-neutral directory for AI agents, preventing sprawl and ensuring trust in connectivity.

Certifiably random: Swiss researchers claim perfect random number source

Swiss researchers have developed a new method for generating truly random numbers using quantum superconducting chips and a long microwave pipe. This advancement aims to overcome biases found in traditional random number generators, which have previously led to security issues in various applications.

Asia's Cyber Insurance Market Shows Signs of Life

The cyber insurance market in Asia has historically struggled to gain traction due to various challenges. However, recent indications suggest a potential resurgence and growth in this sector across the region.

MokN Raises $15 Million for Phish-Back Platform

MokN has secured $15 million in funding for its "Phish-Back" platform. This platform aims to lure attackers into revealing compromised credentials by deploying realistic decoy access points, allowing organizations to respond proactively before these credentials can be misused.

Google Chrome adds session cookie theft protection for all users

Google has rolled out its Device Bound Session Credentials (DBSC) security feature to all Chrome users. This new feature aims to prevent account takeovers by protecting against session cookie theft, a common method used by attackers.

Cybersecurity trends in SEC filings

Public companies are now required by the SEC to include a section in their annual 10-K filings detailing their cybersecurity risk management, strategy, governance, and incidents. This article analyzes these filings, focusing on the top 200 S&P companies, to understand how senior executives are reporting on their cybersecurity posture and to identify trends. The research specifically examines the role of the Chief Information Security Officer (CISO) and their reporting structure.

IBM and Red Hat want to become the ‘security clearinghouse’ for open source applications in the enterprise

IBM and Red Hat are launching Project Lightwell, a new initiative backed by a $5 billion investment and 20,000 engineers, to create an 'enterprise clearinghouse' for open source applications. This AI-powered platform aims to accelerate the discovery and remediation of vulnerabilities in open source software, addressing the challenge of rapid patching in enterprise environments.

Snowflake buys Natoma to help freeze out rogue agents

Snowflake has acquired Natoma, a data security startup focused on preventing unauthorized access and data leakage. This acquisition aims to bolster Snowflake's security offerings, particularly in protecting sensitive data from rogue agents and insider threats.

Geordie Raises $30 Million for AI Security and Governance Platform

Geordie, a company focused on AI security and governance, has successfully raised $30 million in a funding round. The round was led by Balderton Capital, with participation from Crosspoint Capital and existing investors General Catalyst and Ten Eleven Ventures.

How SIEM helps MSPs reduce noise and stop threats faster

Managed Service Providers (MSPs) often face an overwhelming volume of security alerts, making it difficult to identify genuine threats. Kaseya highlights how Security Information and Event Management (SIEM) solutions can help MSPs cut through this 'noise' by improving visibility, reducing alert fatigue, and enabling faster threat response.

Focus on Cyber Insurance: How Quantifying Risk Is Reshaping Security

This article discusses how the cyber insurance industry is compelling organizations to quantify their security risks. It explores what cyber insurance policies typically cover and highlights how this focus on risk assessment can ultimately improve overall cybersecurity posture.

Webinar: Why network incidents take too long to resolve

This article announces a webinar that will discuss why network incidents often take too long to resolve, even when detection is fast. It will explore how automation and AI can help IT teams improve incident response times and reduce delays.

New Edamame Platform Aims to Catch AI Coding Agents Going Off the Rails

Edamame, a startup based in France, has launched a new runtime verification platform. This platform is designed to detect when AI coding agents deviate from their intended tasks, steal secrets, or engage in supply-chain attacks by analyzing host telemetry and AI data in real time.

Nordic CISOs Handle Rising Cyber Threats Remarkably Well

A survey of CISOs in Nordic countries indicates that most are not experiencing an increase in the severity or frequency of cyberattacks compared to two years ago. This resilience is observed despite the growing prevalence and capabilities of artificial intelligence in the threat landscape.

Gartner EPP MQ-17

Gartner has released its 2023 Magic Quadrant for Endpoint Protection Platforms (EPP), a report evaluating vendors in the endpoint security market. The report assesses vendors based on their ability to execute and completeness of vision. Sophos is recognized for its strengths in the market.

Professor Messer’s SY0-701 Security+ Study Group – May 2026

Professor Messer is offering a Security+ Success Bundle that includes downloadable course notes and practice exams to help individuals prepare for the CompTIA Security+ exam. This resource is designed to supplement his free video series and test users' knowledge of the exam objectives.

Bad Habits: An ANTISOC Operation

This article describes an operation called ANTISOC, which blends traditional penetration testing techniques such as red teaming, cloud security, web application testing, and social engineering. The goal is to achieve a broader scope and discover more than a typical penetration test.

Today’s 220-1202 CompTIA A+ Quiz: Sit and stay

Professor Messer is offering a free quiz for the CompTIA A+ 220-1202 certification. This quiz is designed to help individuals test their knowledge and prepare for the exam. The post links back to Professor Messer's IT certification training courses.

How to guarantee a speaker gig: Hack the system. Literally

This article provides a humorous and metaphorical guide to "hacking" a call-for-proposal (CFP) platform to secure a speaker gig at a conference. It uses cybersecurity analogies to explain how to manipulate the system and craft a compelling submission.

RevEng.AI Raises $15 Million to Hunt for Flaws and Backdoors in Software Binaries

RevEng.AI has secured $15 million in funding to advance its AI-powered platform, BinNet, which is designed to identify vulnerabilities and backdoors within software binaries. The company aims to leverage this investment to enhance its capabilities in proactively hunting for security flaws in released software.

3 SOC Steps that Shut Down Incident Risks Early

Modern cyber incidents often bypass traditional defenses by masquerading as legitimate activity, accumulating risk over time. To counter this, the role of the Security Operations Center (SOC) needs to evolve from a 'fortress' approach to one that can detect and disrupt threats early in their lifecycle. This involves proactive measures beyond simply strengthening defenses.

GlassWorm Botnet Disrupted

Security firms have successfully disrupted the GlassWorm botnet by taking down all four of its command-and-control (C&C) channels. This action is a significant step in mitigating the threat posed by this particular malware.

DSPM buyer’s guide: Top 10 data security posture management tools

Data Security Posture Management (DSPM) tools help security teams identify and manage risks associated with sensitive data across cloud and on-premises environments. These tools aim to locate 'shadow data' and complement Cloud Security Posture Management (CSPM) by focusing on data consumption and potential exposure.