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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.
[December 2, 2026 | Virtual]

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SecurityWeek’s Cyber AI & Automation Summit pushes the boundaries of security discussions by exploring the implications and applications of predictive AI, machine learning, and automation in modern cybersecurity programs.
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Vulnerabilities

Cybercrime

South Korean carmaker Hyundai has released updates for its Blue Link mobile applications to address vulnerabilities that could have been exploited by hackers to locate, unlock and start vehicles.

A potentially serious vulnerability has been found in third-party software shipped by several major vendors for their displays. The developer has rushed to release a patch for the flaw, which is believed to affect millions of devices worldwide.

New variants of a recently discovered BrickerBot Internet of Things (IoT) malware capable of permanently disabling devices were observed last week, Radware security researchers warn.

The alleged author of the Kelihos botnet has been charged in an eight-count indictment returned by a federal grand jury in Bridgeport, Connecticut, after being arrested in Spain earlier this month.

A 32-year-old Russian cybercriminal was sentenced in the United States last week to 27 years in prison for hacking into point-of-sale (PoS) computers to steal credit card numbers.

Taiwan-based industrial networking, computing and automation solutions provider Moxa has released an update for some of its wireless access points (APs) to address a critical vulnerability that can be exploited by hackers to gain complete control of affected devices.

Locky was the dominant ransomware in 2016, but was less active in the first quarter of 2017. Now the threat is back with a new Necurs-driven campaign, which was first spotted on April 21. Necurs is a major botnet with estimates last year of up to 1.7 million captive computers. 

Denmark on Monday denounced Moscow's "aggressive" behavior after a report accused Russian hackers of infiltrating the defense ministry's email accounts. "This is part of a continuing war from the Russian side in this field, where we are seeing a very aggressive Russia," Defense Minister Claus Hjort Frederiksen told Danish news agency Ritzau.

A recently discovered remote access Trojan (RAT) that abuses Excel macros in an innovative way has been active for more than two years, Palo Alto Networks security researchers reveal.

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