Is Your VPN Vulnerable to the TunnelVision Exploit?

For countless individuals and businesses, VPNs are the bulwark against cybersecurity threats when navigating the digital world. They serve as the encrypted tunnel through which sensitive data can travel safely, away from prying eyes. Unfortunately, the reliability of VPNs is under scrutiny due to the recent discovery of TunnelVision, a sophisticated technique that uncovers vulnerabilities in routing-based VPNs. Security experts Lizzie Moratti and Dani Cronce from Leviathan Security Group have revealed how this method undermines the protection VPNs are presumed to provide.

Understanding TunnelVision

TunnelVision exploits a fundamental aspect of the DHCP protocol, wherein rogue servers can be set up to manipulate network routing tables. Employing DHCP option 121, attackers can reroute traffic destined for a secure VPN gateway to pass through their server instead. Thus, what was meant to be encrypted and protected can be laid bare, turning the presumed sanctity of VPN networks on its head. This alarming loophole found in VPN setups hinges on the DHCP protocol’s inherent ability to configure network interfaces, making it particularly difficult to prevent and detect.

The exploit takes advantage of operating systems that respect option 121 in the DHCP configuration, leading to the diversion of traffic from seemingly secure connections. Windows, Linux, iOS, and macOS systems are impacted by this vulnerability, but Android remains unaffected due to its handling of DHCP options. The major concern is that this vulnerability is not linked to a specific VPN provider or configuration but is rather embedded in an essential internet protocol used globally since 2002.

Mitigation and Vendor Response

VPNs are a trusted shield for many, safeguarding private data online through secure channels. Yet, this confidence is shaken as vulnerabilities are brought to light. TunnelVision, a method identified by security experts Lizzie Moratti and Dani Cronce from Leviathan Security Group, has exposed a flaw in routing-based VPNs. TunnelVision is capable of bypassing the security that VPNs are supposed to provide—this method could allow unwanted visibility into the data that VPNs are intended to protect. Such findings raise alarms for organizations and individuals relying on VPNs for privacy, pointing to an urgent need to address and reinforce the security measures within these virtual private networks. As the digital landscape evolves, so too must the defenses against cyber threats, ensuring that users can continue to trust the tools designed to protect their online activities.

Explore more

Why Are Small Businesses Losing Confidence in Marketing?

In the ever-evolving landscape of commerce, small and mid-sized businesses (SMBs) globally are grappling with a perplexing challenge: despite pouring more time, energy, and resources into marketing, their confidence in achieving impactful results is waning, and recent findings reveal a stark reality where only a fraction of these businesses feel assured about their strategies. Many struggle to measure success or

How Are AI Agents Revolutionizing Chatbot Marketing?

In an era where digital interaction shapes customer expectations, Artificial Intelligence (AI) is fundamentally altering the landscape of chatbot marketing with unprecedented advancements. Once limited to answering basic queries through rigid scripts, chatbots have evolved into sophisticated AI agents capable of managing intricate workflows and delivering seamless engagement. Innovations like Silverback AI Chatbot’s updated framework exemplify this transformation, pushing the

How Does Klaviyo Lead AI-Driven B2C Marketing in 2025?

In today’s rapidly shifting landscape of business-to-consumer (B2C) marketing, artificial intelligence (AI) has emerged as a pivotal force, reshaping how brands forge connections with their audiences. At the forefront of this transformation stands Klaviyo, a marketing platform that has solidified its reputation as an industry pioneer. By harnessing sophisticated AI technologies, Klaviyo enables companies to craft highly personalized customer experiences,

How Does Azure’s Trusted Launch Upgrade Enhance Security?

In an era where cyber threats are becoming increasingly sophisticated, businesses running workloads in the cloud face constant challenges in safeguarding their virtual environments from advanced attacks like bootkits and firmware exploits. A significant step forward in addressing these concerns has emerged with a recent update from Microsoft, introducing in-place upgrades for a key security feature on Azure Virtual Machines

How Does Digi Power X Lead with ARMS 200 AI Data Centers?

In an era where artificial intelligence is reshaping industries at an unprecedented pace, the demand for robust, reliable, and scalable data center infrastructure has never been higher, and Digi Power X is stepping up to meet this challenge head-on with innovative solutions. This NASDAQ-listed energy infrastructure company, under the ticker DGXX, recently made headlines with a groundbreaking achievement through its