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Passive DNS: improving security and privacy

[Updated with further information and suggestions provided by CSIRTs: thanks!] One incident response tool that seems to be growing in value is passive DNS monitoring, described in Florian Weimer’s original paper.  As described in the references at the bottom of this post, patterns of activity in the Domain Name System – when names change, move […]

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Bug Bounties

Bug bounty schemes have always been controversial. In the early days of the Internet someone who found a bug in software was expected to inform the author and help fix it, as a matter of social responsibility. Suggesting that those researching vulnerabilities be paid for their time and effort seemed rather grubby. Unfortunately not everyone […]

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Sharing to Win Privacy

The theme of this week’s conference of the Forum of Incident Response and Security Teams (FIRST) is “Sharing to Win”. Perhaps inevitably, I’ve had a number of people (and not just Europeans) tell me that privacy law prevents them sharing information that would help others detect and recover from computer security incidents. If that’s right, […]

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Uncertainty, Risk Assessment and Breach Notification

Two talks on the first day of the FIRST conference highlighted the increasing range of equipment and data that can be found on the Internet, and the challenges that this presents both for risk assessment and, if incidents do happen, assessing the severity of the possible breach and what measures need to be taken. Eireann […]