Microsoft is rolling out passkey support for Microsoft Entra on Windows devices, adding phishing-resistant passwordless authentication via Windows Hello. [...]

A newly discovered botnet malware called KadNap is targeting ASUS routers and other edge networking devices to turn them into proxies for malicious traffic. [...]

Malware is evolving to evade sandboxes by pretending to be a real human behind the keyboard. The Picus Red Report 2026 shows 80% of top attacker techniques now focus on evasion and persistence, including geometry-based cursor tests and CPU timing checks. [...]

CISA flagged a high-severity Ivanti Endpoint Manager (EPM) vulnerability as actively exploited in attacks and ordered U.S. federal agencies to patch systems within three weeks. [...]

Microsoft will turn on hotpatch security updates by default for all eligible Windows devices managed through Microsoft Intune and the Microsoft Graph API, beginning with the May 2026 Windows security update. [...]

The Russian state-sponsored APT28 threat group is using a custom variant of the open-source Covenant post-exploitation framework for long-term espionage operations. [...]

Hackers contacted employees at financial and healthcare organizations over Microsoft Teams to trick them into granting remote access through Quick Assist and deploy a new piece of malware called A0Backdoor. [...]

Hackers are increasingly exploiting newly disclosed vulnerabilities in third-party software to gain initial access to cloud environments, with the window for attacks shrinking from weeks to just days. [...]

Russian state-sponsored hackers have been linked to an ongoing Signal and WhatsApp phishing campaign targeting government officials, military personnel, and journalists to gain access to sensitive messages. [...]

Ericsson Inc., the U.S. subsidiary of Swedish networking and telecommunications giant Ericsson, says attackers have stolen data belonging to over 15,000 employees and customers after hacking one of its service providers. [...]

Microsoft says Teams will soon automatically tag third-party bots in lobbies, allowing organizers to control whether they can join meetings. [...]

Salesforce is warning customers that hackers are targeting websites with misconfigured Experience Cloud platforms that give guest users access to more data than intended. However, the ShinyHunters extortion gang claims to be actively exploiting a new bug to steal data from instances. [...]

The Federal Bureau of Investigation (FBI) warns that criminals are impersonating U.S. officials in phishing attacks targeting businesses and individuals who request city and county planning and zoning permits. [...]

Password audits often focus on complexity rules but miss the accounts attackers actually target. Specops Software explains how breached passwords, orphaned users, and service accounts can leave organizations exposed. [...]

Microsoft has confirmed that it's still working to fully address a known issue that causes bright white flashes when opening the File Explorer on some Windows 11 systems. [...]

Athanasios Rantos, the Advocate General of the Court of Justice of the EU (CJEU), has issued a formal opinion suggesting that banks must immediately refund account holders affected by unauthorized transactions, even when it's their fault. [...]

Threat actors are abusing the special-use ".arpa" domain and IPv6 reverse DNS in phishing campaigns that more easily evade domain reputation checks and email security gateways. [...]

Ransomware threat actors tracked as Velvet Tempest are using the ClickFix technique and legitimate Windows utilities to deploy the DonutLoader malware and the CastleRAT backdoor. [...]

Microsoft says threat actors are increasingly using artificial intelligence in their operations to accelerate attacks, scale malicious activity, and lower technical barriers across all aspects of a cyberattack. [...]