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Anthropic says Mythos 5.2 improves vulnerability discovery while showing a lower tendency to escape sandboxes in controlled tests.

Attackers could exploit the flaws for remote code execution, credential theft, and administrator account creation.

CISA has added CVE-2026-123218 and CVE-2026-116779 to KEV, urging federal agencies to patch them within three days.

France summoned the Iranian ambassador and said it would seek European sanctions against those responsible for the attack

The high-severity use-after-free in Chrome’s XML component was reported anonymously on November 6 and is already exploited in attacks.

Online fashion retailer Revolve has told regulators that the September cyberattack affected more than 1.5 million individuals.

Threat actors are exploiting the four-flaw chain to hack the Plex Media Server application on QNAP NAS devices.

Hackers compromised an external cloud service used by the shopping platform and may have stolen personal information from it.

Italian Foreign Minister Antonio Tajani said Saturday that his personal data had been disseminated on the dark web.

The initial exploitation attempts are attributed to botnets and crypto miners, but other threat actors are expected to follow suit.

Hackers stole personal, health, and insurance information, including Social Security numbers, from the company’s internal systems.

Frontline Education told Indiana regulators that its August data breach affected over 3 million school district staff and students.

Working with cryptographers, DeepMind’s AI agents cut the cost of forging RSA-1024 signatures and found a cheaper way to factor keys.

CISA KEV CISA KEV

CISA has added CVE-2026-123218 and CVE-2026-116779 to KEV, urging federal agencies to patch them within three days.

Chrome security Chrome security

The high-severity use-after-free in Chrome’s XML component was reported anonymously on November 6 and is already exploited in attacks.

SSH vulnerability SSH vulnerability

The initial exploitation attempts are attributed to botnets and crypto miners, but other threat actors are expected to follow suit.

Top Cybersecurity Headlines

Working with cryptographers, DeepMind’s AI agents cut the cost of forging RSA-1024 signatures and found a cheaper way to factor keys.

CVE-2026-19868 can let attackers holding credentials for a different login method get past SAML checks, including SAML-enforced MFA.

Rated Critical for cybersecurity, OpenAI’s new model beats GPT-5.6 Cyber at exploitation while staying in scope more reliably.

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The 2026 Virtual CISO Forum brings together CISOs, senior cybersecurity executives, practitioners, industry experts, and other security leaders to share practical experience and examine the issues shaping enterprise cybersecurity strategy.
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SecurityWeek’s CISO Forum 2026 Year-End Virtual Roundtable will reflect on a landmark year in security and discuss how to fortify your enterprise strategy for 2027.
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Vulnerabilities

Cybercrime

Cisco’s Talos intelligence and research group has conducted a two-week analysis of an industrial wireless access point (AP) from Taiwan-based Moxa and discovered more than a dozen vulnerabilities, including ones that can be exploited to take full control of a device.

Researchers at Symantec have analyzed the Vault 7 files published in recent weeks by WikiLeaks and determined that they are very similar to ones used by a cyberespionage group tracked by the security firm as “Longhorn.”

Video gaming retail company GameStop appears to have been breached, with an unknown number of customers' payment card details stolen. Those details are thought to include customer card number, expiration date, name, address and card verification value (CVV2), usually a 3-digit security code printed on the back of the card.

Everyone remembers the social media boom of the mid-2000s. While social networks such as MySpace and Friendster already existed and had fledgling ad revenue models, it wasn’t until the emergence of Twitter, Facebook’s acquisition of FriendFeed, and the development of tools such as HubSpot and HootSuite, that businesses began to take social media seriously as a digital channel.

The City of Dallas, Texas, emergency alarm system was compromised by a hacker or hackers late Friday night. All 156 outside sirens, usually used for severe weather warnings, were activated more than a dozen times between approximately 11:45 pm Friday and 1:20 am Saturday until engineers manually disabled the system.

An unpatched critical vulnerability in Microsoft Office is being exploited by malicious actors to achieve full code execution on target machines, McAfee and FireEye security researchers warn.

The hacker group calling itself “Shadow Brokers” has released another round of exploits and tools allegedly used by the NSA-linked threat actor “Equation Group,” along with a message to U.S. President Donald Trump.

Hundreds of thousands of Industrial Internet of Things (IIoT) and industrial control systems (ICS) products could be exposed to hacker attacks due to critical vulnerabilities affecting a widely used piece of software from Germany-based 3S-Smart Software Solutions.

Security researchers have identified a new type of cyber attack causes damage to Internet of Things (IoT) devices, rather than ensnaring them into a botnet.

Researchers have discovered a strange new ransomware called 'rensenWare'. Rather than demanding money for decryption, it requires the victim to score "over 0.2 billion" playing "TH12 -- Undefined Fantastic Object". Victims are told that the score will be monitored, and decryption will be automatic on success, provided there is no attempt to cheat.

The Triada malware, said last year to be the most advanced mobile threat, recently boosted its detection evasion capabilities with the adoption of sandbox technology, Avast security researchers reveal.

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