Threat Intelligence

IPv6 Security Myth #7: 96 More Bits, No Magic

This week's myth is interesting because if we weren't talking security it wouldn't be a myth. Say what? The phrase "96 more bits, no magic" is basically a way of saying that IPv6 is just like IPv4, with longer addresses. From a pure routing and switching perspective, this is quite accurate. OSPF, IS-IS, and BGP all work pretty much the same, regardless of address family. Nothing about finding best paths and forwarding packets changes all that much from IPv4 to IPv6. more

Gmail as an Email Honeypot

You all remember cybersquatting, a popular sport in the late 90s, right? McDonalds.com, JenniferLopez.com, Hertz.com and Avon.com thankfully all point to the right web sites today, but thaiairline.com, mcdonald.com, luftansa.com, gugle.com, barnesandnobles.com and other misspellings are fake web sites intended to trap the casual surfer with a hand that's a bit too much quicker than the eye... If you want to go to the McDonalds web site, you don't even spend the 10 seconds to look it up -- you will type McDonalds.com and expect to see the latest dollar meal menu. But the same is true for the other popular form of communication -- email... more

VeriSign Leaves the Security Certificate Business

Earlier this week in a press release, VeriSign said that they are selling their SSL certificate business to Symantec. VeriSign is the dominant player in this market, having absorbed competitor Thawte in 1999, and Geotrust in 2006. Three years ago, when VeriSign decided to divest its non-core businesses, they kept the certificate business. So what's changed? more

DNS and Stolen Credit Card Numbers

FireEye announced a new piece of malware yesterday named MULTIGRAIN. This nasty piece of code steals data from Point of Sale (PoS) and transmits the stolen credit card numbers by embedding them into recursive DNS queries. While this was definitely a great catch by the FireEye team, the thing that bothers me here is how DNS is being used in these supposedly restrictive environments. more

Ameritrade Leaks User Information Yet Again, Blames Hacker X

OK, you know things are getting bad when Ameritrade leaks its customer information yet again, and I don't even bother to report it because it's not news anymore. Well, recent updates to the story have prompted me to correct that omission. Yes, it happened again. Roughly a month ago, correspondents began to receive pump-n-dump spam to tagged email addresses which they had given only to Ameritrade... This now marks the third major confirmed leak of customer information from Ameritrade. In addition, the Inquirer reported the loss of 200,000 Ameritrade client files in February 2005. One correspondent informs me that this has happened to him on four or five previous occasions. more

Gold Dragon Helps Olympics Malware Attacks Gain Permanent Presence on Systems, Reports McAfee

A report recently released by McAfee Advanced Threat Research (ATR) revealed a fileless attack targeting organizations involved with the Pyeongchang Olympics. more

IPv6 Security Myth #4: IPv6 Networks are Too Big to Scan

Here we are, all the way up to Myth #4! That makes this the 4th installment of our 10 part series on the top IPv6 Security Myths. This myth is one of my favorite myths to bust when speaking with folks around the world. The reason for that is how many otherwise well-informed and highly experienced engineers, and others, hold this myth as truth. It's understandable, really. more

Security Costs Money. So - Who Pays?

Computer security costs money. It costs more to develop secure software, and there's an ongoing maintenance cost to patch the remaining holes. Spending more time and money up front will likely result in lesser maintenance costs going forward, but too few companies do that. Besides, even very secure operating systems like Windows 10 and iOS have had security problems and hence require patching. (I just installed iOS 10.3.2 on my phone. It fixed about two dozen security holes.) more

Alignment of Interests in DNS Blocking

I've written recently about a general purpose method called DNS Response Policy Zones (DNS RPZ) for publishing and consuming DNS reputation data to enable a market between security companies who can do the research necessary to find out where the Internet's bad stuff is and network operators who don't want their users to be victims of that bad stuff... During an extensive walking tour of the US Capitol last week to discuss a technical whitepaper with members of both parties and both houses of the legislature, I was asked several times why the DNS RPZ technology would not work for implementing something like PROTECT-IP. more

Think China Is the Highest Spamming Country? Think Again

In my department, we block about 92% of our total email (around 2.5 billion per day) at the network edge without accepting the message. When we do that, we don't see any traffic from that IP anymore and don't keep stats on it due to the overwhelming volume of mail. However, we do keep stats on mail that we block with our content filter. I decided to go and calculate how much spam we receive from each country by mapping the source IP back to its source country... more

Crack the Code: That’s a Direct Challenge

I had quite an interesting experience recently. I was hired by a company to perform a vulnerability assessment and penetration test on their network. During the initial meeting, one of the key technical staff presented me with a challenge; He handed over the NTLM hash of the domain Administrator account and challenged me to decipher it. He explained that the complexity and length of the password would prevent me from deciphering it during the time allotted for the project. He was actually quite confident in my impending failure... more

New Data Reveals Phishing Attacks Are Bigger Than Reported, Exact Size of Problem Unknown

A group of experts from Interisle Consulting Group released a paper today, reporting a comprehensive study of the phishing landscape in 2020. The study's goal was to capture and analyze a large set of information about phishing attacks to better understand how much phishing is taking place, where it is taking place, and better ways to fight them. more

Identity Theft of Root Name Servers, Reason Unknown

There have been a number of attacks on the root name servers over the years, and much written on the topic. (A few references are here, here and here.) Even if you don't know exactly what these servers do, you can't help but figure they're important when the US government says it is prepared to launch a military counterattack in response to cyber-attacks on them. more

IPv6 Security Myth #3: No IPv6 NAT Means Less Security

We're back again with part 3 in this 10 part series that seeks to bust 10 of the most common IPv6 security myths. Today's myth is a doozy. This is the only myth on our list that I have seen folks raise their voices over. For whatever reason, Network Address Translation (NAT) seems to be a polarizing force in the networking world. It also plays a role in differentiating IPv4 from IPv6. more

IPv6 Security Myth #1: I’m Not Running IPv6 so I Don’t Have to Worry

Now that IPv6 is being actively deployed around the world, security is more and more a growing concern. Unfortunately, there are still a large number of myths that plague the IPv6 security world. These are things that people state as fact but simply aren't true. While traveling the world, talking to the people who've already deployed IPv6, I've identified what I believe are the ten most common IPv6 security myths. more