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Password Leaks

The technical press is full of reports about the leak of a hashed password file from LinkedIn. Worse yet, we hear, the hashes weren't salted. The situation is probably both better and worse than it would appear; in any event, it's more complicated. more

The Reality Virus

There's a new virus infecting the Internet that's more pernicious and more dangerous than any virus that has gone before. It's the first example ever of a hybrid Internet-human virus and probably the universal common ancestor of all hybrid Internet-human viruses to come. The condition the virus leaves behind is increasingly well recognised and goes by the understated label of "post-truth" but the virus itself is so far anonymous and so I propose we name it after the effect it has on those it has infected who, put simply, can no longer distinguish reality from fiction, hence the reality virus. more

The Incredible Value of Passive DNS Data

If a scholar was to look back upon the history of the Internet in 50 years' time, they'd likely be able to construct an evolutionary timeline based upon threats and countermeasures relatively easily. Having transitioned through the ages of malware, phishing, and APT's, and the countermeasures of firewalls, anti-spam, and intrusion detection, I'm guessing those future historians would refer to the current evolutionary period as that of "mega breaches" (from a threat perspective) and "data feeds". more

Can Big Companies Stop Being Hacked?

The recent huge security breach at Sony caps a bad year for big companies, with breaches at Target, Apple, Home Depot, P.F.Changs, Neiman Marcus, and no doubt other companies who haven't admitted it yet. Is this the new normal? Is there any hope for our private data? I'm not sure, but here are three observations... This week Brian Krebs reported on several thousand Hypercom credit card terminals that all stopped working last Sunday. Had they all been hacked? more

Ethical Hacking: Turning The Tables to Boost Cyber Security

Hacking remains a huge problem for businesses. As noted by MarketWatch, more than 175 data breaches have already happened this year, and in 2015 approximately 105 million adults in the United States had their personal information stolen. For companies, the stakes are huge: Compromised systems not only damage the bottom line but can severely impact public opinion. more

Identifying Spam: MAAWG’s Latest Documents Improve Accuracy of Reputation Systems

The Messaging Anti-Abuse Working Group (MAAWG), of which Return Path (my employer) is a very active participant, met recently in Heidelberg, Germany. Among other exciting projects, they finished two new best practices documents which have been lauded in the press as a big step towards stopping botnet spam... more

“Capacity” - The Hidden Word?

What is so secret about the word, "Capacity"? As I read and talk with people I realize the word, "capacity" is typically missing from the DNS discussion. "Capacity" and "Security" are the two cornerstones to maximizing DNS resilience; both of which are typically missing from the DNS discussion. Have you seen a single DNS node easily process over 863,000 queries per second? Have you seen a network routinely handle over 50Gbits/second in outbound traffic alone without breaking a sweat? more

Innovation and Cybersecurity Regulation

The market has failed to secure cyberspace. A ten-year experiment in faith-based cybersecurity has proven this beyond question. The market has failed and the failure of U.S. policies to recognize this explains why we are in crisis. The former chairman of the Security and Exchange Commission, Christopher Cox, a longtime proponent of deregulation, provided a useful summary of the issue when he said, "The last six months have made it abundantly clear that voluntary regulation does not work."... more

Why Attribution Is Important for Today’s Network Defenders

It makes me cringe when I hear operators or security practitioners say, "I don't care who the attacker is, I just want them to stop." I would like to believe that we have matured past this idea as a security community, but I still find this line of thinking prevalent across many organizations -- regardless of their cyber threat operation's maturity level. Attribution is important, and we as Cyber Threat Intelligence (CTI) professionals, need to do a better job explaining across all lines of business and security operations... more

Conflict Over Efforts to Develop a Best-Practices Document for Blacklist Operators

Neil Schwartzman writes to report: "Ken Magill covers the current rake fight on the IRTF's Anti-Spam Research Group mailing list concerning anti-spam DNS Blacklist, or Blocklist, (DNSBL) operators charging for delistings, that is well worth a read, he has quotes from many experts and leaders in the industry who are decidedly against the practice." more

Geeks All Trust Each Other But Not in China

Brian Krebs has a post up the other day on his blog indicating that the amount of spam ending in .cn has declined dramatically due to steps taken by the Chinese government making it more difficult to get a domain ending in .cn... A cursory glance seems to confirm that the amount of spam from .cn as opposed to .ru has switched places. Indeed, if the CNNIC requires people to start writing in application forms, with a business license and identity card, that is seriously going to slow down the rate at which spammers can sign up and register new domains. more

The Cyberthreats and Trends Enterprises Should Watch in 2016

Every year, Verisign iDefense Security Intelligence Services produces its Cyberthreats and Trends Report, which provides an overview of the key cybersecurity trends of the previous year and insight into how Verisign believes those trends will evolve. This report is designed to assist in informing cybersecurity and business operations teams of the critical cyberthreats and trends impacting their enterprises, helping them to anticipate key developments and more effectively triage attacks and allocate their limited resources. more

BGP Hijacks: Two More Papers Consider the Problem

The security of the global Default Free Zone (DFZ) has been a topic of much debate and concern for the last twenty years (or more). Two recent papers have brought this issue to the surface once again - it is worth looking at what these two papers add to the mix of what is known, and what solutions might be available. The first of these traces the impact of Chinese "state actor" effects on BGP routing in recent years. more

When Cyber Awareness Is Fundamentally Lacking

"Smartphones (and tablets, WdN) are invading the battlefield", reports the Economist on its website of 8 October 2011. On the same day the hacking of U.S. drones is reported on by several news sites. ("They appear friendly". Keyloggers???) Is this a coincidence? more

Security and Reliability: A Closer Look at Vulnerability Assessments

Building on my last article about Network Assessments, let's take a closer look at vulnerability assessments. (Because entire books have been written on conducting vulnerability assessments, this article is only a high level overview.) What is a vulnerability assessment? more