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What are your concerns around encryption? What questions do you have about the legal, technical and policy aspects of the increasing use of encryption? How does encryption help bring about a higher level of trust in the Internet? On Wednesday, May 25, the Internet Society and its Greater Washington, DC Chapter are hosting an "Online Dialogue About Encryption" to discuss all these questions and many more. more
Microsoft is shipping a patch to eliminate SHA-1 hashes from its update process. There's nothing wrong with eliminating SHA-1 - but their reasoning may be very interesting. SHA-1 is a "cryptographic hash function". That is, it takes an input file of any size and outputs 20 bytes. An essential property of cryptographic hash functions is that in practice (though obviously not in theory), no two files should have the same hash value unless the files are identical. more
In its security bulletin, Akamai's Security Intelligence Response Team (SIRT) reported on abuse of DNS Security Extensions (DNSSEC) when mounting a volumetric reflection-amplification attack. This is not news, but I'll use this opportunity to talk a bit about whether there is a trade-off between the increased security provided by DNSSEC and increased size of DNS responses that can be leveraged by the attackers. more
My involvement in the ICT industry over the last 40 years has always been to look at the strategic advantages that new technologies have to offer. I entered the industry through a proto-internet development called videotext. I looked at this technology, at what organisations could do with it, and assisted, for example, in the 1980s when the Commonwealth Bank introduced the world's first national online banking service called Telebank. more
The Optus outage in Australia from last year was immediately on my mind when on Friday afternoon a similar event swept, this time, across the world. Also, in this case it was a software update that caused the problem. This time from global security software provider CrowdStrike. The culprit appears to be an update to the CrowdStrike Falcon platform, a security monitoring tool widely deployed by businesses and organisations on Microsoft desktop computers and notebooks. more
The recent discovery of the goto fail and heartbleed bugs has prompted some public discussion on a very important topic: what advice should cryptologists give to implementors who need to use crypto? What should they do? There are three parts to the answer: don't invent things; use ordinary care; and take special care around crypto code. more
I came across an interesting article on Reuters today: "U.S. securities regulators formally asked public companies for the first time to disclose cyber attacks against them, following a rash of high-profile Internet crimes..." This is a pretty big step for the SEC. Requiring companies to disclose when they have been hacked shifts the action on corporations from something voluntary to something that they have to do. The question is do we want to hear about everything? more
U.S. Congress is growing increasingly suspicious of the popular Russian anti-virus software provider, Kaspersky Lab. more
US presidential candidate Mitt Romney will likely be reconsidering his email passwords after his online email account was reportedly hacked. A hacker claims to have accessed Romney's Hotmail and Dropbox accounts after guessing the answer to the Republican candidate's 'favourite pet' security question. It's suspected Romney used the same password for more than one account. more
As an email policy wonk, I think a lot about how specific policy implementations can go wrong. Sure, every policy can go wrong, or not fit a common case. A lot of people only write polices that address common cases and don't worry about the rarer cases. The problem is there are some rare cases that may cause significant harm and those cases should be addressed. Consumerist has a case up about email policy gone wrong with a clear path to harm but no policy for handling the issue. There are a couple places I see where this policy hole can be fixed. more
Andrew McLaughlin reporting in the White House website: "Last week marked a significant advance in the security of the Internet. After years of intensive design, testing, and implementation work, the Internet's domain name system now has a new security upgrade that allows Internet service providers and end users alike to protect against an important online vulnerability: the clandestine redirecting of online communications to unwanted destinations." more
As announced this morning, the Messaging Anti-Abuse Working Group (MAAWG) has established formal relationships with the Internet Engineering Task Force (IETF) and the BITS/Financial Services Roundtable... It's often said that there are too many different organizations working on the overlapping areas of abuse, trust, and related issues. I believe the collaborative approach MAAWG has chosen will bridge these gaps. more
Friday marks the beginning of the ICANN 57 meeting in Hyderabad, India. As per usual there will be a range of activities related to DNSSEC or DANE. Two of the sessions will be streamed live and will be recorded for later viewing. Here is what is happening. All times below are India Standard Time (IST), which is UTC+05:30. Please do join us for a great set of sessions about how we can work together to make the DNS more secure and trusted! more
The security vendor-phobe at the head of the conference bangs on the podium with his shoe declaring that "The greatest threat comes from within! (buy our product for your network's salvation)." Fear as a marketing strategy can never be underestimated. Particular when the fear is of the misunderstood. Media helps stoke the flames of fear-marketing with stories of fired or disgruntled IT staff who reportedly effectuate their revenge on former employers by bricking systems. more
In case you missed it, last Thursday, May 6, we saw a remarkable day on the stock markets. The day started off with some selling which went down neat and orderly. Suddenly, around 2:40 pm eastern time, the market started selling off rapidly taking huge hits in in the span of 30 minutes. It was an incredible ride and at one point, the Dow Jones average was off 1000 points for the day, the largest drop in history (though not the largest percentage drop). It was kind of like October of 1987. more
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