What's happening in security.
The latest breaches, malware, and privacy stories from BleepingComputer, The Hacker News, Krebs on Security, and Malwarebytes Labs — short excerpts, always linking back to the original source. Last refreshed 20 Oct 2026 · 14:29.
DHS bans DeepSeek products across US federal civilian agencies
The U.S. Department of Homeland Security (DHS) is ordering federal civilian agencies to stop using DeepSeek products and remove them from government systems. [...]
CJIS v6.1 Compliance: 5 Practical Priorities for Agencies
CJIS v6.1 requires agencies to maintain strong authentication, account security, and audit controls while demonstrating ongoing compliance. Specops outlines five practical priorities covering MFA, account management, passwords, logging,...
Hacker gets 8 years for stealing $3.3 million from taxpayers
A Nigerian national was sentenced to eight years in prison for his involvement in a series of spearphishing attacks targeting US tax preparation businesses since 2019. [...]
Windows Server 2025 gets support for quick machine recovery
Microsoft announced that IT administrators can now use quick machine recovery on Windows Server 2025 after installing the October 2026 security update. [...]
OVHcloud CLI releases backdoored on GitHub to steal developer secrets
French cloud and hosting provider OVHcloud is warning users that attackers compromised its open-source command-line interface (CLI) tool to distribute information-stealing malware. [...]
Ahold Delhaize: Cyberattack affects services across US and Europe
Ahold Delhaize, one of the world's largest food retail chains, confirmed that last week's cyberattack disrupted services at stores across Europe and the United States. [...]
Revolut outage disrupts online banking operations worldwide
Fintech company Revolut is working to resolve a massive outage that disrupted most of its services worldwide earlier today. [...]
Nikkei discloses third data breach in a month, 1.8M records exposed
Nikkei Inc. disclosed a new data breach, the third in about a month, that exposed 1.83 million personal information records. [...]
WordPress SEO plugin Rank Math compromised to backdoor websites
Some downloads of the Rank Math PRO WordPress plugin from the vendor's official website carried malware that planted hidden backdoors in a supply-chain attack last week. [...]
Hackers hijack AOMEI update servers to secretly spread malware
Hackers reportedly compromised AOMEI's servers to distribute malware through a built-in promotional feature in its backup software, briefly tampering with configuration files before restoring them to their original state to hide the atta...
Bullhorn takes staffing platform offline to contain cyberattack
Staffing software company Bullhorn has disabled access to its platform to contain a cyberattack that caused a system-wide outage. [...]
OpenCode hack exposes API keys amid AI distillation attacks
The open-source AI coding project OpenCode has notified a small number of users that API keys they used with external providers were exposed in a security breach. [...]
Microsoft fixes game, app crashes caused by recent Windows update
Microsoft has resolved a bug that caused games and apps using AC-3 (Dolby Digital) audio decoding to crash after installing the September 2026 Windows 11 preview update (KB5124010). [...]
Inside the Underground Market for Know Your Client Services
Cybercriminals are selling forged identity documents, deepfake videos, and live verification services to help buyers bypass Know Your Client (KYC) checks. Flare examines how these underground services operate and the techniques used to c...
F5 releases out-of-band patches for critical NGINX vulnerabilities
F5 has released out-of-band security patches to address multiple NGINX web server flaws, including three critical-severity vulnerabilities that can let attackers execute code on vulnerable systems. [...]
Microsoft fixes classic Outlook bug that hid Copilot buttons
Microsoft has fixed a known issue that removed the Copilot Chat and Copilot buttons in the classic Outlook desktop mail client for some Windows users. [...]
Microsoft: October Windows Server updates break Exchange sign-in, mail flow
Microsoft has confirmed that this month's Windows Server security updates are causing OWA sign-in and mail delivery issues on some Exchange Server systems. [...]
Hackers exploit SiteGuard WAF flaw to run commands as admins
Attackers are targeting an OS command injection vulnerability in SiteGuard Server Edition that lets them execute commands as root or SYSTEM on affected servers. [...]
Hackers breach Microsoft 365 tenants via ConnectWise supply-chain attack
ConnectWise has shut down customer access to its Cloud Backup service (formerly SkyKick Cloud Backup) after hackers accessed application identities and compromised Microsoft 365 tenants. [...]
Drupal patches critical RCE flaws, warns exploits may emerge soon
Drupal has patched two critical vulnerabilities that could allow attackers to execute code remotely on websites running any supported version of the content management system. [...]
Critical BlockStrap flaw lets hackers run code on Magento servers
Researchers warn that hackers could soon exploit a maximum-severity vulnerability (CVE-2026-103849) affecting Magento and Adobe Commerce, potentially allowing them to execute arbitrary PHP code on store servers. [...]
Targeted ads installed Candiru spyware in zero-click attacks
Candiru spyware was delivered to devices at Al Jazeera Media Network via targeted online advertisements in a zero-click attack that required only rendering the malicious ads on the victim's device. [...]
Employees using personal ChatGPT at work? Here's what IT admins need to do
Employees using personal ChatGPT accounts at work can expose sensitive company data, even when their organization provides an approved Enterprise workspace. NordLayer explains how IT teams can investigate unauthorized AI use and block se...
Burger King Japan data breach exposes 11 million customer records
Burger King Japan, the Japanese subsidiary of global fast-food giant Burger King, disclosed a major data breach after attackers accessed a server containing 11.18 million customer records. [...]
Microsoft: October Windows update may break Smart App Control
Microsoft says some users may have trouble turning on Smart App Control after installing this month's KB5127648 Windows 11 security update. [...]
BAE Systems cyberattack disrupts US federal court operations
The Administrative Office of the US Courts says a cyberattack on government contractor BAE Systems has taken down the notice system used by federal bankruptcy courts. [...]
BeyondTrust patches zero-day exploited in attacks since August
BeyondTrust warned customers on Thursday to patch a critical flaw in its Remote Support (RS) that has been exploited in zero-day attacks since late August. [...]
Hackers exploit Collabora RCE flaw to backdoor Nextcloud servers
Threat actors are exploiting a critical command execution flaw, now tracked as CVE-2026-110447, in the Collabora Online - Built-in CODE Server app (richdocumentscode) for Nextcloud. [...]
Android gets AI defenses against messaging scams, fake calls
Google announced new AI-powered defenses against scam messages and call-forwarding abuse on Android, currently rolling out to eligible devices. [...]
Hackers hijack D-Link, Ubiquiti devices to resell your stolen bandwidth
A proxyjacking campaign has impacted devices in 34 countries, monetizing victims' internet connections through a commercial residential proxy network. [...]
Fake Arch Linux packages push malware with root privileges
A threat actor uploaded malicious packages to the Arch User Repository (AUR) that impersonated two popular helper tools, yay and paru. [...]
Is AI pentesting as good as a human pentester?
AI pentesting can uncover vulnerabilities missed by human testers, but it also has limitations in consistency, risk assessment, and understanding business context. Intruder compares the strengths and weaknesses of both approaches and exp...
Microsoft: Windows Server 2022 reached end of mainstream support
Microsoft announced that Windows Server 2022 has reached the end of mainstream support and will remain in extended support until October 2031. [...]
Police arrests 95 suspects in international CSAM crackdown action
Law enforcement authorities from 17 countries in Latin America and Europe have arrested 95 suspects in an INTERPOL-coordinated operation targeting the distribution of child sexual abuse material (CSAM) through online messaging groups. [...]
Microsoft fixes bug causing Windows black screens, Explorer crashes
Microsoft has resolved a known issue that was causing black screens, desktop loading issues, and Explorer crashes after installing Windows 11 updates released since August. [...]
UK Legal Aid Agency: Hackers stole records dating back to 1978
The Legal Aid Agency (LAA), an executive agency of the UK's Ministry of Justice that manages the country's Public Defender Service, says attackers who breached its IT systems in April 2025 stole records dating back to 1978. [...]
Palo Alto Networks warns of PAN-OS RCE flaw exploited in attacks
Palo Alto Networks has released security updates for a high-severity PAN-OS RCE zero-day, tracked as CVE-2026-0322, that has been exploited in attacks targeting firewalls. [...]
FBI raids DPRK IT worker laptop farms in Texas, US nationals arrested
The U.S. Department of Justice (DoJ) has disrupted the Famous Chollima threat group's operations by arresting two suspects, charging 14 individuals, and seizing nearly 187 laptops used in North Korean remote IT worker schemes. [...]
Ledger asks sellers across Asia to halt sales after supply-chain attack
Ledger has asked resellers and distributors of its wallets in Indonesia, Singapore, Thailand, the Philippines, Vietnam, Malaysia, and Hong Kong to suspend device sales and remove products from shelves while it investigates device tamperi...
Cisco patches new Secure Email Gateway zero-day exploited in attacks
Cisco has patched another actively exploited zero-day flaw in its Secure Email Gateway (SEG) that lets remote unauthenticated attackers execute commands with root privileges. [...]
Microsoft fixes VPN issues caused by September Windows updates
Microsoft has resolved a known issue that caused Always On VPN connection issues after installing the September 2026 Windows 11 security updates. [...]
The Blind Spots of Agentic Pentesting and How to Close Them
AI-powered penetration testing can uncover complex attack paths, but safety restrictions and network limitations leave many assets and vulnerabilities untested. Picus Security explains how combining agentic pentesting with exposure valid...
Global takedown hits network behind 1 billion phishing messages
A massive cybercriminal ecosystem facilitating more than a billion malicious messages targeting over 75,000 organizations across 150 countries has been disrupted by law enforcement agencies and partners worldwide. [...]
CISA warns admins to immediately fix Ivanti flaw exploited as zero-day
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) urged security teams to immediately patch an Ivanti Connect Secure (ICS) flaw exploited in zero-day attacks since at least October 1st. [...]
Hirudo Android malware replaces banking apps to evade security checks
A new Android malware called Hirudo steals bank account credentials by replacing legitimate banking apps with modified versions that disable security checks. [...]
Microsoft: Recent Windows updates may trigger Remote Desktop failures
Microsoft has confirmed that non-admin users may be unable to connect to devices via Remote Desktop after installing recent Windows updates if the "Administrator protection" security feature is enabled. [...]
OpenAI engineer arrested for allegedly planting spy device in office
A Saudi OpenAI engineer has been arrested for allegedly planting a hidden recording device in an executive conference room at the company's San Francisco offices to secretly record sensitive conversations. [...]
Ghostscript flaw lets hackers hijack servers via PDF uploads
A critical heap buffer overflow vulnerability (CVE-2026-39919) in the Ghostscript interpreter and rendering engine could allow remote code execution through specially crafted PDF files. [...]
Anthropic warns self-replicating AI could spread to your smart devices
Anthropic is warning that small AI models could soon be able to self-replicate across consumer IoT devices, from Android TV boxes to smart ovens, creating distributed botnets capable of running AI workloads without relying on data center...
Microsoft October 2026 Patch Tuesday fixes 1,411 flaws, 3 zero-days
Today is Microsoft's October 2026 Patch Tuesday, with security updates addressing a record-breaking 1,411 flaws, including one actively exploited and two publicly disclosed zero-day vulnerabilities. [...]
Microsoft releases Windows 10 KB5126657 extended security update
Microsoft released the Windows 10 KB5126657 extended security update, which includes this month's record-breaking October 2026 Patch Tuesday fixes and a few bug fixes and changes. [...]
Microsoft: Windows 11 24H2 Home and Pro reached end of support
Microsoft announced today that devices running Windows 11 24H2 Home and Pro editions have reached the end of support and will no longer receive monthly security and non-security preview updates. [...]
UK Housing Ombudsman Service investigates 'security incident'
The U.K. Housing Ombudsman Service is investigating a third-party IT security incident that impacted its case management system on Tuesday. [...]
Windows 11 KB5127648 & KB5126653 cumulative updates released
Microsoft has released the Patch Tuesday Windows 11 KB5127648 and KB5126653 cumulative updates for versions 26H2/25H2/24H2 and 23H2 to fix security vulnerabilities and bugs, and add new features. [...]
TFG London cyberattack disrupts systems at Hobbs and Whistles retailers
TFG London detected a cybersecurity incident that impacted IT systems used by the Phase Eight, Hobbs, and Whistles premium fashion brands. [...]
Ivanti warns of Connect Secure zero-day exploited in attacks
Ivanti urged customers on Tuesday to immediately patch an actively exploited zero-day vulnerability in the Ivanti Connect Secure (ICS) remote access gateway. [...]
Docker Hub flaw let attackers impersonate users, tamper with images
Docker has disclosed a critical vulnerability (CVE-2026-105445) in Docker Hub that let attackers access another user's container repositories using a personal access token (PAT). [...]
The MFA Gaps Attackers are Still Exploiting
Attackers continue exploiting gaps in MFA coverage, using stolen credentials to access VPNs, RDP, and Windows systems that still rely on passwords alone. Specops explains why protecting cloud applications isn't enough and how organizatio...
SAP warns of maximum severity OAuth2 SSRF security flaw
SAP has addressed 20 security flaws across multiple products in its October 2026 security updates, including a maximum-severity vulnerability in the Cloud SDK for Python. [...]