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New “optical tornado” technology could transform quantum communication

Scientists have created tiny “optical tornadoes” — swirling beams of light that twist like miniature whirlwinds — using a surprisingly simple setup based on liquid crystals. Instead of relying on complex nanotechnology, the team used self-organizing structures called torons to trap and manipulate light, causing it to spiral and rotate in intricate ways. Even more impressively, they achieved this effect in light’s most stable, lowest-energy state, making it far easier to generate laser-like beams with these unusual properties.
http://news.poseidon-us.com/TSDBZR

Cisco ACI Multi-Site CloudSec Encryption Information Disclosure Vulnerability

A vulnerability in the Cisco ACI Multi-Site CloudSec encryption feature of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an unauthenticated, remote attacker to read or modify intersite encrypted traffic. This vulnerability is due to an issue with the implementation of the ciphers that are used by the CloudSec encryption feature on affected switches. An attacker with an on-path position between the ACI sites could exploit this vulnerability by intercepting intersite encrypted traffic and using cryptanalytic techniques to break the encryption. A successful exploit could allow the attacker to read or modify the traffic that is transmitted between the sites. Cisco has deprecated and removed the ACI Multi-Site CloudSec encryption feature that is affected by this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aci-cloudsec-enc-Vs5Wn2sX Security Impact Rating: High CVE: CVE-2023-20185
http://news.poseidon-us.com/TSCGvD

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On April 23, 2026, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) issued an update to V1: Emergency Directive (ED) 25-03: Identify and Mitigate Potential Compromise of Cisco Devices related to Cisco Secure Firewall Adaptive Security Appliance (ASA) and Cisco Secure Firewall Threat Defense (FTD) products. According to the update, the ArcaneDoor threat actor has developed a previously unknown persistence mechanism that is preserved across upgrading to the fixed releases that were published in September 2025. This persistence mechanism resides in the Cisco Firepower eXtensible Operating System (FXOS) Software base operating system for Cisco Secure Firewall ASA Software and Cisco Secure FTD Software installations on the affected hardware platforms. Note: According to the intelligence Cisco PSIRT has received to date, the initial compromise, begins with the attacker exploiting the following vulnerabilities before customers upgraded to the fixed releases that were made available in September 2025: * CVE-2025-20333: Cisco Secure Firewall Adaptive Security Appliance Software and Secure Firewall Threat Defense Software VPN Web Server Remote Code Execution Vulnerability * CVE-2025-20362: Cisco Secure Firewall Adaptive Security Appliance Software and Secure Firewall Threat Defense Software VPN Web Server Unauthorized Access Vulnerability For more information about the fixed releases that were made available in September 2025, see September 2025 Cisco Event Response: Continued Attacks Against Cisco Firewalls. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-persist-CISAED25-03 Security Impact Rating: Informational
http://news.poseidon-us.com/TSBPzN