Home security giant ADT has confirmed a data breach after the ShinyHunters extortion group threatened to leak stolen data unless a ransom is paid. [...]

Cybersecurity agencies in the U.S. and U.K. are warning about a custom malware called Firestarter persisting on Cisco Firepower and Secure Firewall devices running Adaptive Security Appliance (ASA) or Firepower Threat Defense (FTD) software. [...]

Microsoft is rolling out Windows Update improvements that give users more control over how updates are installed while reducing disruption from frequent or poorly timed restarts. [...]

A new financially motivated hacking group tracked as BlackFile has been linked to a wave of data theft and extortion attacks against retail and hospitality organizations since February 2026. [...]

Microsoft will roll out passkey support for phishing-resistant passwordless authentication to Microsoft Entra‑protected resources from Windows devices starting late April. [...]

A new vulnerability dubbed Pack2TheRoot could be exploited in the PackageKit daemon to allow local Linux users to install or remove system packages and gain root permissions. [...]

Article 9 of DORA makes authentication and access control a legal obligation for EU financial entities. Here is what the regulation requires, and what a breach looks like when those controls are missing. [...]

Over 10,000 Zimbra Collaboration Suite (ZCS) instances exposed online are vulnerable to ongoing attacks exploiting a cross-site scripting (XSS) security flaw. [...]

Microsoft says IT administrators can now uninstall the AI-powered Copilot digital assistant from enterprise devices using a new policy setting, which has become broadly available after the April 2026 Patch Tuesday. [...]

Hackers are actively exploiting a critical vulnerability in the Breeze Cache plugin for WordPress that allows uploading arbitrary files on the server without authentication. [...]

The Bitwarden CLI was briefly compromised after attackers uploaded a malicious @bitwarden/cli package to npm containing a credential-stealing payload capable of spreading to other projects. [...]

Recently observed Trigona ransomware attacks are using a custom, command-line tool to steal data from compromised environments faster and more efficiently. [...]

Hackers have compromised Docker images, VSCode and Open VSX extensions for the Checkmarx KICS analysis tool to harvest sensitive data from developer environments. [...]

Dutch cosmetics giant Rituals disclosed a data breach after attackers stole the personal information of an undisclosed number of customers from its "My Rituals" membership database. [...]

Password resets are one of the easiest ways for attackers to bypass security controls. Specops Software shows how helpdesk social engineering turns a seemingly legitimate reset request into full account compromise. [...]

Microsoft confirmed that a recent Microsoft Edge browser update introduced a bug that prevents Windows users from joining Teams meetings. [...]

The United Kingdom's National Cyber Security Centre (NCSC-UK) and international partners warned that China-nexus hackers are increasingly using large-scale proxy networks of hijacked consumer devices to evade detection and disguise their malicious activity. [...]

A previously undocumented state-backed threat actor named GopherWhisper is using a Go-based custom toolkit and legitimate services like Microsoft 365 Outlook, Slack, and Discord in attacks against government entities. [...]

CISA has ordered U.S. federal agencies to patch a Microsoft Defender privilege escalation flaw (dubbed BlueHammer) that has been exploited in zero-day attacks. [...]

Apple has released out-of-band security updates for iPhone and iPad devices to fix a Notification Services flaw that could allow notifications marked for deletion to remain stored on the device. [...]