Threat Intelligence

Household Botnet Infections

Pinning down the number of infected computers is really, really hard. I'd go as far as saying it's practically impossible to calculate, let alone observe. Still, that's not going to stop people from attempting to guess or extrapolate from their own observations. Over the years I've heard "reliable" numbers ranging from 10% through to 60% -- and I don't trust any of them. There's a whole gaggle of reasons why the numbers being thrown out to the public are inaccurate and should ideally be interpreted with a lot of skepticism by any right-minded folks. more

Microsoft Disrupts the Zeus Infrastructure

Over the weekend and this morning, Microsoft, working in conjunction with others, issued civil lawsuits to sinkhole numerous domains associated with the Zeus botnet. When I say "botnet", I use the term loosely because Zeus is not a botnet in the sense that Rustock or Waledac is (or was). Rather, Zeus is a tool kit that online criminals can buy that lets them create phishing pages, perform fast fluxing, host drive-by downloads in addition to spamming. It's more like infrastructure than a botnet, although it does have a large botnet under its control. more

NASA Teething Troubles Teach a DNSSEC Lesson

On January 18, 2012, Comcast customers found they could not access the NASA.gov website. Some users assumed that Comcast was deliberately blocking the website or that NASA, like Wikipedia and Reddit, was participating in the "blackout" protests against the Stop Online Piracy Act (SOPA) going on that day. As it turned out, the truth was much less exciting, but it offers important lessons about DNSSEC. more

Protection Is Only One Side of the Security Coin

"Security is all about protecting the user." That's the comment that came up the other week in the twittersphere that kicked off a not-unexpected trail of pro and con tweets. Being limited to 140 characters makes it rather difficult to have a deep and meaningful discussion on the topic and the micro-blogging apparatus isn't particularly conducive to the communicating the nuances of a more detailed thought. So I thought I'd address the topic here in blog format instead. more

ICANN’s Contract Not Enforceable on WHOIS Accuracy

This may or may not come as a shock to some of you, but ICANN's contract with the Domain Name Registrars, in terms of WHOIS inaccuracy is not enforceable. Bear with me. The ability of ICANN to enforce against a Registrar who fails to correct or delete a domain with false WHOIS does not exist. more

The Top 3 Emerging Threats on the Internet

Last week at RSA, Bruce Schneier gave a talk on the top 3 emerging threats on the Internet. Whereas we in the security field usually talk about spam, malware and cyber crime, he talked about three meta-trends that all have the potential to be more dangerous than the cybercriminals. Here are my notes. more

Email and Social Media Accounts Under the Spotlight in UK’s Proposed New ‘Spy’ Plan

It would be reasonable to assume that your employer is archiving your email communications. But what about your personal emails, texts, phone calls and Facebook posts. Are these really private? Not for long, if the UK government has its way. It has been reported that its new anti-terror plan, if passed, would require Internet providers and phone companies to store all online communications by UK citizens for one year. more

Anonymous Plans to Go After DNS Root Servers. What Will Be the US’s Response?

The other day on pastebin, snippets of an email conversation were posted with members of the hacking group Anonymous discussing plans to conduct DOS attacks against the Internet's root name servers... Going after the Internet's root servers is a very bold move by Anonymous. Whereas before they were "merely" breaking into companies that they believed were acting contra to the hacker ethic, going after the Internet infrastructure is another thing altogether. Why? more

Debilitating Cyber Attack: Not If, But When?

We all know how easy it can be to ignore or underestimate the possibly, or even likelihood, of a terrorist attack; just remember what happened on 9-11. That seems to be just what the U.S. is doing when it comes to a possible Cyber-Attack, no not in other countries, but right here at home where targets like private sector companies, who provide vital economic and emergency services to our population using broadband infrastructure, and are woefully under-secured for such attacks. more

How Frequently Do Botnets Reuse IP Addresses?

I wonder how much botnets reuse IP addresses. Do they infect a system and spam, get blocked, discard the IP and move onto the next (new) one? This means that they have a nearly unlimited supply of IP addresses. Or do they infect a system and spam, get blocked, and then let it go dormant only to awaken it some time later? I decided to take a look. more