Cyberattack

Preventing Future Attacks: Alternatives In DNS Security Management - Part II

In Part I of this article I set the stage for our discussion and overviewed the October 21st DDoS attacks on the Internet's 13 root name servers. In particular, I highlighted that the attacks were different this time, both in size and scope, because the root servers were attacked at the same time. I also highlighted some of the problems associated with the Domain Name System and the vulnerabilities inherent in BIND. Part II of this article takes our discussion to another level by critically looking at alternatives and best practices that can help solve the security problems we've raised. more

ClamAV and the Case of the Missing Mail

Some email discussion lists were all atwitter yesterday, as Sourcefire's open-source anti-virus engine ClamAV version 0.94.x reached its end-of-life. Rather than simply phase this geriatric version out the development team put to halt instances of V0.94 in production yesterday, April 15, 2010. In other words, the ClamAV developers caused version .94 to stop working entirely, and, depending upon the implementation, that meant email to systems using ClamAV also stopped flowing. more

Risk vs Benefit: The Impact of Shorter 90-Day SSL Certificate Life Cycles

In today's digital age, securing your website and ensuring your users' safety has never been more critical. Secure sockets layer (SSL) certificates are the go-to solution for securing websites by encrypting the data transmitted between web servers and browsers. Historically, SSL digital certificates could be valid for years, after which they had to be renewed or replaced.  more

How You Can Be Hijacked Without Actually Being Hacked

Unsuspecting website visitors are often unaware when they have landed on a spoofed page or are re-directed to malware-hosting web servers designed to steal their sensitive data and information. This attack is known as subdomain hijacking, or subdomain takeover. A web user's private information is then traded on the dark web, and cybercriminals profit, further fueling the expansion of identity theft in the online world. more

The xz liblzma Vulnerability

On 29 March 2024, an announcement was posted notifying the world that the Open-Source Software (OSS) package "xz-utils," which includes the xz data compression program and a library of software routines called "liblzma" and which is present in most Linux distributions, had been compromised. The insertion of the compromised code was done by "Jia Tan", the official maintainer of the xz-utils package. more

Why You Must Learn to Love DNSSEC

It's been nearly two months since the high profile BGP hijack attack against MyEtherwallet, where crypto thieves used BGP leaks to hijack MEW's name servers, which were on Amazon's Route53, and inserted their own fake name servers which directed victims to their own fake wallet site, thereby draining some people's wallets. It generated a lot of discussion at the time... What isn't fully appreciated is that attack has, in fact, changed the game somewhat... more

IoT Devices Will Never Be Secure - Enter the Programmable Networks

Harvard Business Review just ran an interesting article on the information security aspects of Internet of Things (IoT). Based on the storyline, the smart city initiatives are doomed to fail unless the security of the IoT devices and the systems will be improved. While security of the digital society is obviously a key concern, I am not entirely convinced that relying on the security of individual devices and systems is the best course of action. more

Designing Secure Networks with Cisco Technology, Part 4

In this multipart series I will be presenting some of the leading industry-standard best practices for enterprise network security using Cisco technologies... In Part 3 of this series I began to discuss Cisco technologies as a standard for enterprise data security. In this article we take a look at how Cisco firewall and packet filtering technologies can be used at the network perimeter to enhance enterprise security. more

Why Isn’t Mobile Malware More Popular?

This is a followup to Wout de Natris' as usual excellent piece on the Enisa botnet report -- pointing out the current state of mobile malware and asking some questions I started off answering in a comment but it grew to a length where I thought it'd be better off in its own post. Going through previous iterations of Mikko's presentations on mobile malware is a fascinating exercise. more

HTTPS Web Hijacking Goes From Theory to Practice

I've been privately talking about the theoretical dangers of HTTPS hacking with the developers of a major web browser since 2006 and earlier last month, I published my warnings about HTTPS web hacking along with a proposed solution. A week later, Google partially implemented some of my recommendations in an early Alpha version of their Chrome 2.0 browser... This week at the Black Hat security conference in Washington DC, Moxie Marlinspike released a tool called SSL Strip... more

Why Can’t We Make the Internet Secure?

In a discussion about a recent denial of service attack against Twitter, someone asked, "Some class of suppliers must be making money off of the weaknesses. Anybody out there have a prescription for the cure?" Sure, but you're not going to like it. The Internet was originally a walled garden, where its operators knew who all the users were and could eject anyone who misbehaved... more

A Brief Primer on Anti-Satellite Warfare Tactics

Satellites make it possible for governments to provide essential services, such as national defense, navigation, and weather forecasting. Private ventures use satellites to offer highly desired services that include video program distribution, telecommunications, and Internet access. The Russian launch of a satellite, with nuclear power and the likely ability to disable satellites, underscores how satellites are quite vulnerable to both natural and manmade ruin. more

Domain Name System (DNS) Security Should Be One of Your Priorities

Most people, even seasoned IT professionals, don't give DNS (the Domain Name System) the attention it deserves. As TCP/IP has become the dominant networking protocol, so has the use of DNS... Due to the reliability built into the fundamental RFC-based design of DNS, most IT professionals don't spend much time worrying about it. This can be a huge mistake! more

2.6 Billion Records Were Stolen, Lost or Exposed Worldwide in 2017, an 88% Increase From 2016

Over the past five years, nearly 10 billion records have been lost, stolen or exposed, with an average of five million records compromised every day. more

Which Domains Stand the Strongest Against Phishing Attacks?

The latest Anti-Phishing Working Group (APWG) Global Phishing Survey, which analyzed over 100,000 phishing attacks in the first half of 2014, examines the progress that top level domains (TLDs) are making in responding to phishing attacks that use their TLDs. The report finds the .INFO domain has the lowest average phishing uptimes as compared to other TLDs, such as .COM and .NET. more