Bruce Schneier

Schneier on Security

One of the things we learned from the Snowden documents is that the NSA conducts “about” searches. That is, searches based on activities and not identifiers. A normal search would be on a name, or IP address, or phone number. An about search would something like “show me anyone that ... Read More

Note: This isn’t my usual essay topic. Still, I want to put it on my blog. Six months into the pandemic with no end in sight, many of us have been feeling a sense of unease that goes beyond anxiety or distress. It’s a nameless feeling that somehow makes it ... Read More

Researchers can detect deep fakes because they don’t convincingly mimic human blood circulation in the face: In particular, video of a person’s face contains subtle shifts in color that result from pulses in blood circulation. You might imagine that these changes would be too minute to detect merely from a ... Read More

Really interesting conversation with someone who negotiates with ransomware gangs: For now, it seems that paying ransomware, while obviously risky and empowering/encouraging ransomware attackers, can perhaps be comported so as not to break any laws (like anti-terrorist laws, FCPA, conspiracy and others) ­ and even if payment is arguably unlawful, ... Read More

Mark Jaycox has written a long article on the US Executive Order 12333: “No Oversight, No Limits, No Worries: A Primer on Presidential Spying and Executive Order 12,333“: Abstract: Executive Order 12,333 (“EO 12333”) is a 1980s Executive Order signed by President Ronald Reagan that, among other things, establishes an ... Read More

There’s a new unpatched Bluetooth vulnerability: The issue is with a protocol called Cross-Transport Key Derivation (or CTKD, for short). When, say, an iPhone is getting ready to pair up with Bluetooth-powered device, CTKD’s role is to set up two separate authentication keys for that phone: one for a “Bluetooth ... Read More

It’s complicated, but it’s basically a man-in-the-middle attack that involves two smartphones. The first phone reads the actual smartcard, and then forwards the required information to a second phone. That second phone actually conducts the transaction on the POS terminal. That second phone is able to convince the POS terminal ... Read More

Harvard Kennedy School’s Belfer Center published the “National Cyber Power Index 2020: Methodology and Analytical Considerations.” The rankings: 1. US, 2. China, 3. UK, 4. Russia, 5. Netherlands, 6. France, 7. Germany, 8. Canada, 9. Japan, 10. Australia, 11. Israel. More countries are in the document. We could — and ... Read More

Interesting paper: "Replication: Why We Still Can't Browse in Peace: On the Uniqueness and Reidentifiability of Web Browsing Histories": We examine the threat to individuals' privacy based on the feasibility of reidentifying users through distinctive profiles of their browsing history visible to websites and third parties. This work replicates and ... Read More

DiceKeys is a physical mechanism for creating and storing a 192-bit key. The idea is that you roll a special set of twenty-five dice, put them into a plastic jig, and then use an app to convert those dice into a key. You can then use that key for a ... Read More