Latest cybersecurity reporting from selected sources.

NightmareEclipse Says Mitigation Can Exhaust Disk Space, Crash AppsMicrosoft's patch for CVE-2026-50656, known as RoguePlanet, has sparked fresh criticism after researcher NightmareEclipse alleged the mitigation can exhaust disk space, crash applications and leak memory, extending a months-long dispute over Microsoft's handling of multiple zero-day disclosures.

Also, France Probes Tchap Breach, M&S Cancels Bonuses, June Patch TuesdayThis week, CISA tightened patching rules, hackers provoked AI scanners. An accused Russian intel hacker appeared in court. Microsoft warned of AI-themed attacks. M&S canceled bonuses. France probed a Tchap breach. NHS trusts disclosed stolen data and a Telegram campaign targeted Russian troops.

Hidden Install Settings Let Malicious MCP Links Execute CodeMicrosoft patched a high-severity flaw in Visual Studio Code after researchers found attackers could hide malicious settings inside MCP server install links, giving them persistent access to developer machines through what appeared to be routine artificial intelligence tool installations.

Ex-Microsoft CIO: Mythos Could Surface Known Flaws Faster Than Vendors Can Fix ThemFormer Microsoft CIO Jim DuBois and IDC's Frank Dickson say Claude Mythos Preview could rapidly surface long-known but unfixed software flaws at scale, forcing vendors and enterprises to strengthen patch validation, orchestration and deployment before attackers exploit the backlog.

Also, More ClickFix Attacks and Teen Booters Arrested in PolandThis week, Russian hackers targeted Signal and WhatsApp users, permit-fee phishing hit U.S. applicants, ClickFix on WordPress sites, Microsoft patched 80 bugs, a 14K-router botnet, Polish teens held over DDoS tools and Finland warned of Russian, Chinese espionage. North Korean IT workers for hire.

Also: Trojanized RedAlert App, Tycoon 2FA Takedown, CyberStrikeAI AttacksThis week, Cisco patches and hacks. Trojanized app targeted Israelis. Bye-bye, Tycoon 2FA. Also bye-bye LeakBase. A LexisNexis breach. Woman sentenced for trafficking Microsoft licenses. Silver Dragon targeted governments. Broadcom patch. A Mississippi medical clinic resumed operations.

Also, More ShinyHunters Breaches, North Korea Laptop Farm Operator SentencedThis week, Finland's Aleksanteri Kivimäki sentenced. ShinyHunters breaches. Laptop farm rancher sentenced. Oregon state agency hacker sentenced. African scammers arrested. MuddyWater AI-assisted hacks. Advantest ransomware incident, SolarWinds and Microsoft patches. FileZen flaw. QualDerm breach.

Also: Spanish Hacker Granted Russian Asylum, Microsoft Patches Zero-DaysThis week, a CISA warning, Nest footage in Nancy Guthrie case, Signal phishing. Spanish hacker, Russian asylum. Spanish ministry services offline. BYOVD ransomware. The Conduent breach hit Volvo. Microsoft patched zero-days. ZeroDayRAT targeted devices. The SmarterMail breach. Another Fortinet flaw.

Also, SmarterMail Flaw, Nike Breach Probe, Empire Market Co-Creator Pleads GuiltyThis week, researchers exposed an Android RAT abusing Hugging Face. Attackers exploited a SmarterMail flaw. Automakers raised cyber spending. CISA flagged a VMware bug. Microsoft patched Office. An Empire Market co-creator pleaded guilty. Nike probed a breach.

Also, Dutch Defend the Nexperia Takeover, Hikvision Challenges FCC, Qilin StrikesThis week, likely North Korean hackers exploited React2Shell. The Dutch government defended its seizure of Nexperia. Prompt injection may be here to stay. Hikvision pushed back against a new U.S. crackdown. Qilin claimed it hacked Scientology, Microsoft Patch Tuesday and MuddyWater activity.

Also, Microsoft Badly Patches LNK Flaw, Australian Sentenced for 'Evil Twin' HackThis week, the React flaw, a belated Windows fix, Defense Secretary Pete Hegseth's Signal group posed operational risk, more North Korean npm packages. An Australian jailed for Wi-Fi "evil twin" crimes. The US FTC will send $15.3 million to Avast users. A London council said attackers stole data.

Chinese Hackers Target European Diplomats with LNK File FlawChinese nation-state hackers are exploiting a Windows vulnerability to hack European diplomatic outposts, say security researchers - but operating system giant Microsoft says the flaw doesn't merit a patch. Hackers used a flaw already compromised by North Korea and Russia.

Thousands of Windows Server Update Services Observed OnlineWarnings over hackers exploiting a Windows Server Update have compounded since Microsoft rushed out a patch Friday against a flaw allowing unauthenticated attackers to execute arbitrary code.

Also: Spain Defies Pressure to Eject Huawei, Hackers Leak North Korea Kimsuky DataThis week, Norway said Russian hackers attacked a flood gate, Spain defied pressure to eject Huawei, a cyberattack against the Office of the Pennsylvania Attorney General. Hackers leaked stolen North Korean Kimsuky data, Microsoft patched a Kerberos zero-day and a big Chrome bug bounty.

Microsoft Issuing Emergency Patches to Combat Authentication-Bypassing AttacksHackers have been exploiting a zero-day vulnerability dubbed "ToolShell" in on-premises installations of Microsoft SharePoint to gain remote access, and steal cryptographic keys and data. As Microsoft rolls out patches, experts warn administrators to also rotate keys, to help eject attackers.

Microsoft Patched Flaw Allowing Attackers to Hijack Copilot ResponsesA well-phrased email was all an attacker would have needed to trick Microsoft Copilot into handing over sensitive data until the operating system giant patched the vulnerability. The zero-click prompt injection attack vulnerability received a CVSS severity score of 9.3.

UEFI Vulnerability Threatens Systems with Silent CompromiseHackers could circumvent the protections of Secure Boot by silently disabling it through an attack that potentially affects a wide swath of Windows laptops and servers. Microsoft issued a patch this month and hackers would already need admin access and physical access to a target machine.

Check Point: 'Stealth Falcon' Exploited WebDAV FlawMicrosoft on Tuesday patched a zero-day vulnerability in WebDAV that was exploited by UAE-linked threat actors as part of an espionage campaign in the Middle East and Africa. Check Point attributed the campaign to the Emirates APT group Stealth Falcon.

Also, Oracle Denies Cloud Breach, Blames Hack on Obsolete ServersThis week, Port of Seattle notified victims, Oracle blamed hack on obsolete servers, Google and Microsoft released April patches, WK Kellogg breached, six arrested in Spain for AI-investment scam, Scattered Spider's "King Bob" pleaded guilty, SmokeLoader users busted.

Tech Giant Says Threat Actors Are Exploiting a Flaw in Widely-Targeted Windows ToolRansomware threat actors are exploiting a zero-day vulnerability discovered in a highly targeted Windows logging system tool in a campaign in part targeting U.S. IT and real estate sectors, Microsoft confirmed in a Tuesday blog post urging customers to apply available patches.