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Cisco warns of large-scale brute-force attacks against VPN and SSH services

Security Affairs

Cisco Talos warns of large-scale brute-force attacks against a variety of targets, including VPN services, web application authentication interfaces and SSH services. Pierluigi Paganini Follow me on Twitter: @securityaffairs and Facebook and Mastodon ( SecurityAffairs – hacking, brute-force )

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New TunnelVision technique can bypass the VPN encapsulation

Security Affairs

TunnelVision is a new VPN bypass technique that enables threat actors to spy on users’ traffic bypassing the VPN encapsulation. Leviathan Security researchers recently identified a novel attack technique, dubbed TunnelVision, to bypass VPN encapsulation. The researchers referred to this result as “decloaking.”

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Multiple malware used in attacks exploiting Ivanti VPN flaws

Security Affairs

Mandiant spotted new malware used by a China-linked threat actor UNC5221 targeting Ivanti Connect Secure VPN and Policy Secure devices. Mandiant researchers discovered new malware employed by a China-linked APT group known as UNC5221 and other threat groups targeting Ivanti Connect Secure VPN and Policy Secure devices.

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Threat actors exploit Ivanti VPN bugs to deploy KrustyLoader Malware

Security Affairs

Threat actors are exploiting recently disclosed zero-day flaws in Ivanti Connect Secure (ICS) VPN devices to deliver KrustyLoader. is an Authentication Bypass issue that resides in the web component of Ivanti ICS 9.x, The second flaw, tracked as CVE-2024-21887 (CVSS score 9.1) The flaw CVE-2023-46805 (CVSS score 8.2)

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CISA orders federal agencies to disconnect Ivanti VPN instances by February 2

Security Affairs

The CISA’s emergency directive orders to disconnect all instances no later than 11:59PM on Friday February 2, 2024. “As soon as possible and no later than 11:59PM on Friday February 2, 2024, disconnect all instances of Ivanti Connect Secure and Ivanti Policy Secure solution products from agency networks.”

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Experts warn of mass exploitation of Ivanti Connect Secure VPN flaws

Security Affairs

Experts warn that recently disclosed Ivanti Connect Secure VPN and Policy Secure vulnerabilities are massively exploited in the wild. is an Authentication Bypass issue that resides in the web component of Ivanti ICS 9.x, The second flaw, tracked as CVE-2024-21887 (CVSS score 9.1) The flaw CVE-2023-46805 (CVSS score 8.2)

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Okta warns of unprecedented scale in credential stuffing attacks on online services

Security Affairs

From March 18, 2024, to April 16, 2024, Duo Security and Cisco Talos observed large-scale brute-force attacks against a variety of targets, including VPN services, web application authentication interfaces and SSH services.

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