Ask the Experts

Ask the Experts

Network device security: Appliances, firewalls and switches

• Switcher Android Trojan: How does it attack wireless routers?

  The Switcher Trojan spreads to Android devices through the wireless router to which they are connected. Expert Nick Lewis explains how this attack is carried out.  Continue Reading

• How does the PoisonTap exploit bypass password locks on computers?

  The PoisonTap exploit can bypass password locks on computers, enabling an attacker to remotely control systems. Expert Nick Lewis explains how the attack works.  Continue Reading

• What basic steps can improve network device security in enterprises?

  Network device security is a big problem for enterprises, but there are some basic steps they can take to improve it. Expert Matthew Pascucci outlines the process.  Continue Reading

• How does DNSChanger take advantage of WebRTC protocols?

  WebRTC protocols are being targeted by a new version of the DNSChanger exploit kit. Judith Myerson explains how these attacks work and what enterprises should know.  Continue Reading

• Are free VPN clients secure enough for enterprise users?

  There are many free VPN clients on the market, but are they secure enough for enterprise users? Expert Judith Myerson looks at the pros and cons of ad-supported VPNs.  Continue Reading

• Which encryption tools can secure data on IoT devices?

  Protecting the data that moves through the internet of things can be a challenge for enterprises. Expert Judith Myerson offers several encryption tools for the task.  Continue Reading

• How does a Netgear vulnerability enable command injection attacks?

  A Netgear vulnerability exposed a number of wireless router models to command injection attacks. Expert Judith Myerson explains how the attack works and how to stop it.  Continue Reading

• How does the BlackNurse attack overwhelm firewalls?

  A new attack called "BlackNurse" can disrupt firewalls with a small amount of ICMP packets. Expert Judith Myerson explains how it works and why it's a security issue for enterprises.  Continue Reading

• How is Windows BITS used to redownload malware after its removal?

  Malicious Windows BITS tasks set up by attackers can reinfect systems even after the malware has been removed. Expert Nick Lewis explains how to locate and remove these tasks.  Continue Reading

• Asset tracking: What products and services can trace device location?

  IT asset tracking can be used to ensure devices stay in a precise location, or to trace missing devices. Expert Michael Cobb covers the most popular products and services.  Continue Reading

• SAP vulnerability: Why didn't the patch work correctly?

  An old SAP vulnerability that enabled remote administrative access was found to be ineffectually patched. Expert Nick Lewis explains how enterprises can secure their systems.  Continue Reading

• Is a cryptographic algorithm behind Juniper's backdoor?

  Juniper firewall products were found to have two backdoor vulnerabilities. Expert Michael Cobb explains how a cryptographic algorithm and hardcoded password enabled this to happen.  Continue Reading

• How can enterprises defend against an evil twin attack?

  The threat of an evil twin attack has plagued enterprises for years, and it's still not leaving. Expert Nick Lewis explains how to defend against evil twins.  Continue Reading

• Moose worm: How can enterprises stop social media fraud?

  A Linux-based Moose worm causes social media fraud through infected routers. Expert Nick Lewis explains how the Moose worm works and how to avoid it.  Continue Reading

• Can a thermal sensor pull data from an air-gapped computer?

  An air-gapped computer is supposed to be safe from over-the-air attacks, yet new research exposed a vulnerability that allows heat and thermal sensors to extract data. Expert Nick Lewis explains how to address the threat.  Continue Reading