Ask the Experts

Web security tools and best practices

What's the purpose of CAPTCHA technology and how does it work?

Learn about the purpose of CAPTCHA challenges that enable websites to differentiate bots from authentic users to stop spammers from hijacking forums and blog comment sections. Continue Reading
How can developers avoid a Git repository security risk?

Learn how managing web development content with the popular version control system can be risky without taking action to avoid these basic Git repository security risks. Continue Reading
How can credential stuffing attacks be detected?

Credential stuffing attacks can put companies that offer online membership programs, as well as their customers, at risk. Find out how to proactively manage the threat. 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
How does cross-site tracking increase security risks?

Mozilla's Firefox 63 automatically blocks tracking cookies and other site data from cross-site tracking. Learn what this is and what the benefits of blocking it are with Nick Lewis. 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
How did WhatsApp vulnerabilities get around encryption?

WhatsApp vulnerabilities can enable hackers to bypass end-to-end encryption and spoof messages. Expert Michael Cobb explains how these attacks work and how to prevent them. Continue Reading
How does TLS 1.3 differ from TLS 1.2?

Compared to TLS 1.2, TLS 1.3 saw improvements in security, performance and privacy. Learn how TLS 1.3 eliminated vulnerabilities using cryptographic algorithms. Continue Reading
What are the security risks of third-party app stores?

Unlike most apps developed in app stores, users can download Fortnite from Epic Games' website. Expert Michael Cobb explains the security risks of third-party app stores. Continue Reading
How was Kea DHCP v1.4.0 affected by a security advisory?

Kea, an open source DHCP server, was issued a medium security advisory for a flaw that causes memory leakage in version 1.4.0. Discover the workarounds with Judith Myerson. Continue Reading
How does a WDC vulnerability put hardcoded passwords at risk?

Several vulnerabilities were found in Western Digital's My Cloud, including one that affects the default hardcoded password. Learn how to avoid such risks with expert Nick Lewis. Continue Reading

How can a 13-year-old configuration flaw affect SAP systems?

Cybersecurity vendor Onapsis found a 13-year-old flaw that affects nine out of 10 SAP NetWeaver systems. Learn how the flaw affects SAP systems with expert Judith Myerson. Continue Reading
What is missing from the NIST/DHS botnet security report?

The joint DHS and NIST report on botnet security offers goals and action items to counter distributed cyberthreats. Learn the report recommendations with expert Nick Lewis. Continue Reading
How did a Navarino Infinity flaw expose unauthenticated scripts?

Navarino Infinity, a satellite communication system, found and fixed a flaw that exposed an unauthenticated script. Discover what threats this flaw enabled with Judith Myerson. Continue Reading
How can cryptojacking attacks in Chrome be stopped?

Google instituted an aggressive ban on all cryptomining extensions for Chrome after cryptojacking attacks started to become more common. Learn how the ban works with Michael Cobb. Continue Reading