Tag: cyber
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Users advised to drop passwords and make room for passkeys
In a decisive move that could reshape how users log in online, the National Cyber Security Centre (NCSC) is urging consumers to abandon passwords in favour of passkeys, … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/04/24/ncsc-passkey-adoption-cybersecurity/
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The Cyber Express Weekly Roundup: Data Breaches, Malware Campaigns, and Cyber Fraud Investigations
In this week’s edition of The Cyber Express weekly roundup, we explore the latest developments in the world of cybersecurity, focusing on high-profile data breaches, growing malware campaigns, and law enforcement actions against cybercriminals. First seen on thecyberexpress.com Jump to article: thecyberexpress.com/tce-weekly-roundup-april-2026/
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Hackers Exploit Agent ID Administrator Role to Hijack Service Principals
A severe scoping vulnerability was recently discovered in Microsoft Entra ID’s new Agent Identity Platform. The security flaw allowed users assigned the Agent ID Administrator role to hijack arbitrary service principals across an organization’s tenant, leading to potential privilege escalation. Although the administrative role was designed strictly to manage AI agent identities, a boundary breakdown…
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GPT-5.5 Bio Bug Bounty Program Aims to Improve AI Safety and Performance
OpenAI has officially launched the GPT-5.5 Bio Bug Bounty program to strengthen safeguards against emerging biological risks. As artificial intelligence models become more advanced, the potential for malicious actors to generate dangerous biological information increases. Advanced persistent threats (APTs) and lone attackers could potentially misuse large language models to accelerate harmful biological research. To address…
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Fake CAPTCHA Scam Triggers Costly SMS Fraud
Hackers are abusing fake CAPTCHA pages to run a silent but lucrative international SMS fraud scheme, turning routine “prove you’re human” checks into a revenue engine built on international revenue share fraud (IRSF). Attackers set up lookalike and scam domains that eventually redirect victims through a traffic distribution system (TDS) to a fake CAPTCHA page.…
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Claude Desktop Reportedly Adds Browser Access Bridge for Chromium Browsers
A detailed cybersecurity report published by privacy expert Alexander Hanff on April 18, 2026, reveals that Anthropic’s Claude Desktop application for macOS silently installs a Native Messaging bridge across multiple Chromium-based browsers. This unprompted installation establishes out-of-sandbox browser automation hooks that pose significant privacy and security risks, bypassing explicit user consent and standard application security…
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Claude Desktop Reportedly Adds Browser Access Bridge for Chromium Browsers
A detailed cybersecurity report published by privacy expert Alexander Hanff on April 18, 2026, reveals that Anthropic’s Claude Desktop application for macOS silently installs a Native Messaging bridge across multiple Chromium-based browsers. This unprompted installation establishes out-of-sandbox browser automation hooks that pose significant privacy and security risks, bypassing explicit user consent and standard application security…
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Compromised everyday devices power Chinese cyber espionage operations
China-linked threat actors have shifted from individually procured infrastructure to large-scale covert networks, botnets built from compromised routers and other edge … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/04/24/ncsc-china-covert-networks-advisory/
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New Cisco firewall malware can only be killed by pulling the plug
Suspected state-sponsored attackers are using a custom backdoor to persistently compromise Cisco security devices (firewalls), the US CISA and the UK National Cyber Security … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/04/24/cisco-firepower-firestarter-backdoor/
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Hackers Exploit Pastebin PowerShell Script to Hijack Telegram Sessions
Hackers are experimenting with a new Telegram”‘focused session stealer that hides in a Pastebin”‘hosted PowerShell script posing as a Windows telemetry update, giving defenders a rare view into how such tools are built and tested. The script does not attempt to grab passwords or browser credentials; instead, it focuses entirely on Telegram’s desktop client data…
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Xiongmai IP Camera Flaw Lets Attackers Bypass Authentication
Tags: access, authentication, cctv, cyber, cybersecurity, flaw, infrastructure, technology, vulnerabilityA critical security vulnerability has been identified in Hangzhou Xiongmai Technology’s XM530 IP Cameras, putting countless commercial facilities at risk. This severe flaw allows remote attackers to bypass authentication protocols and access sensitive device information easily. The Cybersecurity and Infrastructure Security Agency (CISA) published an official alert regarding the issue on April 23, 2026. Critical…
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Void Dokkaebi Hackers Spread Malware Through Fake Job Interviews
Void Dokkaebi, also known as Famous Chollima, is expanding its cyber operations by turning fake job interviews into a large-scale malware distribution campaign targeting developers. The campaign begins with attackers posing as recruiters from cryptocurrency or AI companies. Developers are invited to complete coding tests that require cloning and running seemingly legitimate repositories from platforms…
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China-Linked Cyber Actors Turn to Massive Covert Botnets to Evade Detection
A newly issued cybersecurity advisory highlights an evolution in the tactics, techniques and procedures (TTPs) employed by China-Nexus threat actors. The report, released with support from the UK Cyber League and coordinated by the National Cyber Security Centre (NCSC-UK) alongside international partners, sheds light on how Chinese threat actors are relying on large-scale covert networks of compromised…
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China-linked threat actors use consumer device botnets to evade detection, warn UK and partners
UK National Cyber Security Centre (NCSC) warns China-linked hackers use hijacked devices as proxy networks to hide activity and evade detection. UK National Cyber Security Centre (NCSC) and global partners warn that China-linked threat actors now rely on large proxy networks built of hacked consumer devices. Groups control routers, cameras, video recorders, and NAS systems…
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Python Vulnerability Enables OutBounds Write on Windows
A high-severity security vulnerability has been discovered in Python’s asyncio module on Windows, potentially allowing attackers to write data beyond the boundaries of an allocated memory buffer. The flaw, tracked as CVE-2026-3298, was publicly disclosed on April 21, 2026, by Python security developer Seth Larson via the official Python security announcement mailing list. The vulnerability exists in the sock_recvfrom_into() method…
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Hackers Exploit Ollama Model Uploads to Leak Server Data
Cybersecurity researchers have uncovered a severe, unpatched vulnerability in Ollama, a popular open-source platform used for running large language models locally. Tracked as CVE-2026-5757, this critical flaw exists in Ollama’s model quantization engine. If exploited, it allows an unauthenticated attacker to steal sensitive server data by simply uploading a maliciously crafted AI model file. How…
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Hackers Exploit Ollama Model Uploads to Leak Server Data
Cybersecurity researchers have uncovered a severe, unpatched vulnerability in Ollama, a popular open-source platform used for running large language models locally. Tracked as CVE-2026-5757, this critical flaw exists in Ollama’s model quantization engine. If exploited, it allows an unauthenticated attacker to steal sensitive server data by simply uploading a maliciously crafted AI model file. How…
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China-Linked Hackers Hide Behind Compromised Routers
Hackers linked to China are increasingly abusing compromised routers and edge devices to build covert networks, enabling stealthy cyber operations that are harder to detect and block. Instead of relying on dedicated servers or purchased hosting, threat actors are now leveraging large-scale botnets made up of hacked small office/home office (SOHO) routers, IoT devices, and…
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AI is speeding up nation-state cyber programs
In this Help Net Security interview, Kaja Ciglic, Senior Director, Cybersecurity Policy and Diplomacy at Microsoft, discusses how nation-state cyber programs have changed over … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/04/24/kaja-ciglic-microsoft-nation-state-cyber-programs/
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Hackers Track 900+ React2Shell Exploits via Telegram Bots
Hackers are using Telegram bots and AI tooling to run a structured, at-scale exploitation campaign abusing the critical React2Shell vulnerability (CVE-2025-55182), with evidence of 900+ confirmed compromises. Investigators found an exposed server tied to the Bissa scanner platform, used for multi-victim exploitation, staging, and validation rather than simple data dumping. Logs and project artifacts show…
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Bitwarden CLI Compromised After Malicious GitHub Actions Workflow
Cybersecurity researchers at Socket have uncovered a major supply chain compromise affecting the Bitwarden CLI. Attackers successfully abused a GitHub Action in Bitwarden’s CI/CD pipeline to inject malicious code into the popular password manager’s npm package. This breach is part of the broader, ongoing Checkmarx supply chain campaign. Bitwarden CLI Compromised The compromised package, identified…
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Hackers Exploit SS7 and Diameter Flaws to Track Mobile Users Globally
A recent investigation by Citizen Lab has uncovered sophisticated, multi-year surveillance campaigns exploiting foundational vulnerabilities in global mobile networks. The report, titled >>Bad Connection,<< reveals how suspected commercial surveillance vendors (CSVs) weaponize the SS7 and Diameter signaling protocols to covertly track high-profile individuals across the globe without interacting directly with their devices. These findings underscore…
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Ransomware Gang Unveils Custom Data-Theft Tool
Ransomware operators introduced a custom-built data exfiltration tool, signaling a notable evolution in attack techniques. Unlike most ransomware groups that rely on publicly available utilities such as Rclone or MegaSync, Trigona affiliates are now using a proprietary tool to steal sensitive data with greater precision and stealth. Trigona, active since late 2022, operates as a…
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Communicating Cyber Risk to the Board: Executive Reporting Best Practices
Key Takeaways Why Cyber Risk Gets Lost in Translation Most CEOs can recite their quarterly benchmarks and revenue figures down to the decimal point. However, when asked to define their organization’s cyber risk exposure, the answers typically drift into the vague and anecdotal. This disconnect is occurs when security leaders assume that CEOs have an……
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Tropic Trooper APT Takes Aim at Home Routers, Japanese Targets
The Chinese state-sponsored cyber threat is known for moving fast and trying odd attack vectors; now it’s branching out in tools, victimology, and TTPs. First seen on darkreading.com Jump to article: www.darkreading.com/threat-intelligence/tropic-trooper-apt-takes-aim-home-routers-japanese-targets
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3 practical ways AI threat detection improves enterprise cyber resilience
Legitimate admin activity and malicious behavior often look similar without contextHybrid environments generate fragmented telemetry that rule sets can’t correlateLean teams don’t have time to manually connect the dots across systemsPlatforms like Adlumin MDR apply behavioral models and automated triage to suppress low”‘value alerts and elevate incidents that actually matter. Fewer alerts, better context, and…
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3 practical ways AI threat detection improves enterprise cyber resilience
Legitimate admin activity and malicious behavior often look similar without contextHybrid environments generate fragmented telemetry that rule sets can’t correlateLean teams don’t have time to manually connect the dots across systemsPlatforms like Adlumin MDR apply behavioral models and automated triage to suppress low”‘value alerts and elevate incidents that actually matter. Fewer alerts, better context, and…
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The curious case of Sean Plankey’s derailed CISA nomination
Questions over who wanted Plankey blocked: On March 3, Ana Visneski, a former head of global disaster response at Amazon Web Services and former chief of digital media for the US Coast Guard, posted on Bluesky that she was “hearing from multiple sources” that Plankey “has been fired and escorted out of Coast Guard HQ…