Alleged Huawei zero-day blamed for the 2025 Luxembourg telecom crash

A Huawei zero-day flaw reportedly caused Luxembourg’s 2025 nationwide outage, disrupting landline, 4G/5G, and emergency services On July 23, 2025, a nationwide telecom outage in Luxembourg was reportedly triggered by a previously undisclosed flaw in Huawei enterprise routers. The attack disrupted landline, 4G, 5G, and emergency communications for more than three hours after specially crafted […]

May 20, 2026
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Microsoft dismantled malware-signing network Fox Tempest

Microsoft disrupted Fox Tempest, a malware-signing-as-a-service (MSaaS) that allowed attackers to sign malware with fake trusted certificates. Microsoft said it disrupted a cybercrime operation run by a threat actor named Fox Tempest, which helped threat actors sign malware with short-lived certificates to make malicious software appear legitimate. The service abused Microsoft Artifact Signing and supported […]

May 19, 2026
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Poland shifts away from Signal following cyberattacks on officials’ accounts

Poland told officials to stop using the popular instant messaging app Signal after cyberattacks targeted government accounts. Poland has instructed government officials to stop using Signal for sensitive communications and move to a state-developed alternative. The decision follows repeated cyberattacks targeting Signal accounts belonging to politicians, military personnel, and public servants. Officials believe the campaigns […]

May 19, 2026
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Shai-Hulud worm copycats emerge after source code leak

Shai-Hulud worm copycats are already attacking NPM developers after its source code leaked, enabling fast supply chain exploitation. The first copycats of the Shai-Hulud worm have already started showing up online, only a few days after the malware’s source code was dumped on GitHub. Researchers had warned this would happen almost immediately, and they were […]

May 19, 2026
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ShinyHunters hack 7-Eleven: franchisee data and Salesforce records exposed

7-Eleven confirmed a breach after ShinyHunters claimed theft of over 600,000 Salesforce records and franchisee data. 7-Eleven has confirmed a data breach after the ShinyHunters hacking group claimed it stole more than 600,000 Salesforce records containing personal and corporate information. “Over 600k Salesforce records containing PII and other internal corporate data have been compromised.” The […]

May 18, 2026
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Chaotic Eclipse discloses MiniPlasma zero-day, suggesting a missing or undone 2020 Windows security fix

MiniPlasma: a Windows SYSTEM privilege escalation believed patched in 2020 (CVE-2020-17103) is still fully working on every patched Windows 11. Once again, security researcher Chaotic Eclipse has released a proof-of-concept exploit for a new Windows privilege escalation zero-day called MiniPlasma, which can grant attackers SYSTEM privileges on fully patched systems. The flaw affects “cldflt.sys,” the […]

May 18, 2026
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