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6 Prompts You Don't Want Employees Putting in Microsoft Copilot

Microsoft Copilot is a powerful asset for companies, but with it comes an increased risk of data exposure. In this article, Varonis demonstrates prompt-hacking examples that can expose sensitive data. [...]

https://www.bleepingcomputer.com/news/security/6-prompts-you-dont-want-employees-putting-in-microsoft-copilot/
Hosting firm's VMware ESXi servers hit by new SEXi ransomware

Chilean data center and hosting provider IxMetro Powerhost has suffered a cyberattack at the hands of a new ransomware gang known as SEXi, which encrypted the company's VMware ESXi servers and backups. [...]

https://www.bleepingcomputer.com/news/security/hosting-firms-vmware-esxi-servers-hit-by-new-sexi-ransomware/
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Microsoft still unsure how hackers stole MSA key in 2023 Exchange attack

The U.S. Department of Homeland Security's Cyber Safety Review Board (CSRB) has released a scathing report on how Microsoft handled its 2023 Exchange Online attack, warning that the company needs to do better at securing data and be more truthful about how threat actors stole an Azure signing key. [...]

https://www.bleepingcomputer.com/news/security/microsoft-still-unsure-how-hackers-stole-msa-key-in-2023-exchange-attack/
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New HTTP/2 DoS attack can crash web servers with a single connection

Newly discovered HTTP/2 protocol vulnerabilities called "CONTINUATION Flood" can lead to denial of service (DoS) attacks, crashing web servers with a single TCP connection in some implementations. [...]

https://www.bleepingcomputer.com/news/security/new-http-2-dos-attack-can-crash-web-servers-with-a-single-connection/
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Hoya’s optics production and orders disrupted by cyberattack

Hoya Corporation, one of the largest global manufacturers of optical products, says a "system failure" caused servers at some of its production plants and business divisions to go offline on Saturday. [...]

https://www.bleepingcomputer.com/news/security/hoyas-optics-production-and-orders-disrupted-by-cyberattack/
Acuity confirms hackers stole non-sensitive govt data from GitHub repos

Acuity, a federal contractor that works with U.S. government agencies, has confirmed that hackers breached its GitHub repositories and stole documents containing old and non-sensitive data. [...]

https://www.bleepingcomputer.com/news/security/acuity-confirms-hackers-stole-non-sensitive-govt-data-from-github-repos/
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