Ask the Experts

Ask the Experts

Enterprise network security

• Do network layer and application layer DDoS attacks differ?

  Network layer and application layer DDoS attacks are significant threats. Learn about the differences between them and what you can do to reduce their effects.  Continue Reading

• How to detect and defend against a TCP port 445 exploit and attacks

  The WannaCry TCP port 445 exploit returned the spotlight to Microsoft's long-abused networking port. Network security expert Kevin Beaver explains how to detect and defend against such attacks.  Continue Reading

• How can endpoint security features help combat modern threats?

  The antivirus of yesteryear isn't a strong enough competitor to beat modern enterprise threats. Learn about the endpoint security features ready to tackle these battles head-on.  Continue Reading

• What is a password spraying attack and how does it work?

  Password spraying isn't a sophisticated attack, but don't discount the attackers if you detect one. Find out how this brute-force technique works and how to defend against it.  Continue Reading

• What is a port scan attack?

  Cyberattacks often begin with a port scan attack, which attackers use to find exploitable vulnerabilities on targeted systems. Learn how they work and how to defend against them.  Continue Reading

• How can I detect fileless malware attacks?

  Monitoring process memory is one way to combat fileless malware attacks. Here's what you can do to protect your network against these campaigns.  Continue Reading

• Why do DDoS attack patterns rise in the autumn?

  DDoS attack patterns indicate a sharp escalation in the fall. Why does that occur and what can be done to guard against these attacks?  Continue Reading

• Should I worry about the Constrained Application Protocol?

  The Constrained Application Protocol underpins IoT networks. But the protocol could allow a threat actor to launch an attack.  Continue Reading

• Is a Mirai botnet variant targeting unpatched enterprises?

  New variants of popular botnets were found targeting IoT devices by Palo Alto Networks' Unit 42. Discover how these variants differ from their sources and what new risks they pose.  Continue Reading

• What new technique does the Osiris banking Trojan use?

  A new Kronos banking Trojan variant was found to use process impersonation to bypass defenses. Learn what this evasion technique is and the threat it poses with Nick Lewis.  Continue Reading

• How do I stop the Vidar malvertising attack?

  The Vidar malvertising attack was part of a two-pronged intrusion that included the installation of ransomware in endpoints. How can enterprises protect themselves?  Continue Reading

• How do trusted app stores release and disclose patches?

  A flaw was found in the Android installer for Fortnite and was patched within 24 hours. Learn how such a quick turnaround affects mobile app security with expert Nick Lewis.  Continue Reading

• How did Browser Reaper cause browsers to crash?

  A Mozilla vulnerability duplicated in the Browser Reaper set of DoS proofs of concept caused Chrome, Firefox and Safari to crash. Learn why and how this occurred.  Continue Reading

• Will DNS Flag Day affect you? Infoblox's Cricket Liu explains

  What is DNS Flag Day? That's when old and broken DNS servers will stop working, improving DNS performance and safety for all. Infoblox's chief DNS architect Cricket Liu explains.  Continue Reading

• Java deserialization attacks: What are they and how do they work?

  The TP-Link EAP Controller for Linux was recently found to be vulnerable to attacks. Learn from Judith Myerson what this means for users and how it can be prevented.  Continue Reading