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矮星系发现巨大黑洞

Solidot
3 months 2 weeks ago
Segue 1 是一个矮星系，仅包含少数恒星——少到无法提供防止自身外散到太空中所需的引力。与其他矮星系一样，长久以来认为一种称为暗物质的引力是主要的束缚力。 一项新研究推翻了这一假设，挑战了天文学家对矮星系的理解。Segue 1 中心的一个巨大黑洞提供了所需的引力，而不是暗物质，使恒星被其引力束缚在一起。Segue 1 距离银河系仅 75,000 光年，是银河系的近邻，黑洞的质量是太阳质量的 450,000 倍，大约是 Segue 1 中所有恒星质量总和的 10 倍。在大多数星系中，中心黑洞的质量不会超过恒星的质量。一种可能解释是，它曾经是一个有更多恒星的更大星系。然而随着时间的推移，银河系可能已经攫取了大部分恒星，仅少数遗留下来。另一种可能性是，Segue 1 类似于一类新发现的星系，称为小红点，这些星系似乎是在巨大的黑洞和很少的恒星中发展起来的。这些早期星系位于宇宙最遥远的地方而难以研究。有了 Segue 1，天文学家现在在临近处有一个能提供他们观察小红点演变过程的的天体。

澳大利亚警方开发大模型解码 Z 世代俚语和表情符号

Solidot
3 months 2 weeks ago
澳大利亚联邦警方正与微软合作开发 AI 工具解码 Z 世代俚语和表情符号以打击网络剥削和犯罪网红（crimefluencer）。联邦警察总长 Krissy Barrett 警告，以弱势少年少女为目标的年轻网络犯罪团伙正在兴起。她称这些人是犯罪网红，动机是制造混乱和伤害他人，而大多数受害者是少女。她说，他们的动机并非出于经济利益或性满足——纯粹是为了找乐子，或是为了博取关注，没有完全意识到其行为的后果。警方已经确认 59 名犯罪网红，逮捕了其中一部分人，他们的年龄都在 17-20 岁之间。

Akira

Dark Feed IO
3 months 2 weeks ago

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cohenido

CISA Warns of Dassault Systèmes Vulnerabilities Actively Exploited in Attacks

Cyber Security News
3 months 2 weeks ago

CISA has added two critical vulnerabilities affecting Dassault Systèmes DELMIA Apriso to its Known Exploited Vulnerabilities catalog, warning that threat actors are actively exploiting these security flaws in real-world attacks. The alert, issued on October 28, 2025, requires federal agencies to implement mitigations by November 18, 2025, while urging all organizations using the affected software […]

The post CISA Warns of Dassault Systèmes Vulnerabilities Actively Exploited in Attacks appeared first on Cyber Security News.

Abinaya

Major Cyber Attacks in October 2025: Phishing via Google Careers & ClickUp, Figma Abuse, LockBit 5.0, and TyKit 

Anyrun
3 months 2 weeks ago

Phishing campaigns and ransomware families evolved rapidly this October, from fake Google Careers pages and ClickUp redirect chains to Figma-hosted credential theft and LockBit’s move into ESXi and Linux systems. ANY.RUN analysts also uncovered TyKit, a reusable phishing kit hiding JavaScript inside SVG files to steal Microsoft 365 credentials across multiple sectors.  Each of these […]

The post Major Cyber Attacks in October 2025: Phishing via Google Careers & ClickUp, Figma Abuse, LockBit 5.0, and TyKit  appeared first on ANY.RUN's Cybersecurity Blog.

ANY.RUN

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