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One of the chronic features of the Bitcoin landscape is that Bitcoin exchanges screw up and fail, starting with Mt. Gox. There's nothing conceptually very hard about running an exchange, so what's the problem? The first problem is that Bitcoin and other blockchains are by design completely unforgiving. If there is a bug in your software which lets people steal coins, too bad, nothing to be done. more
Millions of email warnings were sent out by Marriot on Friday to warn customers about the massive data breach which has affected close to half a billion guest data. more
Hackers behind the massive data breach of the hotel group Marriott International Inc have left clues suggesting ties to the Chinese government intelligence-gathering operation. more
Today, President Macron threw down the gauntlet to President Trump and the US administration on Multistakeholderism. In his welcome address to IGF 2018 Paris a few hours ago, President Macron challenged IGF to become more relevant by reinventing itself in factoring in multilateralism into IGF's non-decision-making body and to move beyond the mere talk-ship lip service it has been for the last 13 years. more
Two months ago, the Trump White House published its National Cyber Strategy. It was followed a few days ago with the release of its draft NSTAC Cybersecurity "moonshot." The Strategy document was basically a highly nationalistic America-First exhortation that ironically bore a resemblance to China's more global two-year-old National Cybersecurity Strategy. more
The level of interest in the general topic of routing security seems to come in waves in our community. At times it seems like the interest from network operators, researchers, security folk and vendors climbs to an intense level, while at other times the topic appears to be moribund. If the attention on this topic at NANOG 74 is anything to go by we seem to be experiencing a local peak. more
ICANN just recently performed a Root Zone DNS Security Extensions (DNSSEC) Key Signing Key (KSK) Rollover. The recent KSK Rollover that took place on the 11th October 2018. The KSK Rollover has been successful and congratulations are in order. The Root Zone DNSSEC Key Signing Key "KSK" is the top most cryptographic key in the DNSSEC hierarchy. The KSK is a cryptographic public-private key pair. more
At a recent workshop on cybersecurity at Ditchley House sponsored by the Ditchley Foundation in the U.K., a primary topic of consideration was how to preserve the freedom and openness of the Internet while protecting against the harmful behaviors that have emerged in this global medium. That this is a significant challenge cannot be overstated... That these harmful behaviors can and do cross international boundaries only makes it more difficult to fashion effective responses. more
I keep hearing stories of people using "foldering" for covert communications. Foldering is the process of composing a message for another party, but instead of sending it as an email, you leave it in the Drafts folder. The other party then logs in to the same email account and reads the message; they can then reply via the same technique. Foldering has been used for a long time, most famously by then-CIA director David Petraeus and his biographer/lover Paula Broadwell. Why is foldering used? more
Recently we've seen several examples of likely state sponsored security incidents of which the appropriateness was later strongly debated. Incidents such as states impacting commercial enterprises during cyber attacks; purported sabotage of critical infrastructure, and attacks on civilian activists have all, to a greater or lesser degree, led to concerns being raised by both civilian watchdog groups, academics, technologists and governments. more
The APNIC Blog has recently published a very interesting article by Willem Toorop of NLnet Labs on the relationship between Security Extensions for the DNS (DNSSEC) and DNS over Transport Layer Security. Willem is probably being deliberately provocative in claiming that "DoT could realistically become a viable replacement for DNSSEC." If provoking a reaction was indeed Willem's intention, then he has succeeded for me, as it has prompted this reaction. more
There have been many news stories of late about potential attacks on the American electoral system. Which attacks are actually serious? As always, the answer depends on economics. There are two assertions I'll make up front. First, the attacker -- any attacker -- is resource-limited. They may have vast resources, and in particular, they may have more resources than the defenders -- but they're still limited. Why? more
I have written about the problems with the "little green lock" shown by browsers to indicate a web page (or site) is secure. In that article, I consider the problem of freely available certificates, and a hole in the way browsers load pages. In March of 2017, another paper was published documenting another problem with the "green lock" paradigm - the impact of HTTPS interception. more
U.S. federal government officials have revealed Russian hackers have been able to gain access to the networks of electric utilities in the country, according to a report by The Wall Street Journal. more
Sometimes, a government agency will post a PDF that doesn't contain searchable text. Most often, it's a scan of a printout. Why? Don't the NSA, the Department of Justice, etc., know how to convert Word (or whatever) directly to PDF? It turns out that they know more than some of their critics do. The reason? With a piece of paper, you know much more about what you're actually disclosing. more