There are two kinds of cryptography in this world: cryptography that will stop your kid sister from reading your files, and cryptography that will stop major governments from reading your files.
Bruce Schneier (1996). "Applied Cryptography 2nd edition Source Code in C". John Wiley & Sons.
Anyone, from the most clueless amateur to the best cryptographer, can create an algorithm that he himself can't break.Bruce Schneier
It is poor civic hygiene to install technologies that could someday facilitate a police state.Bruce Schneier
Digital files cannot be made uncopyable, any more than water can be made not wet.Bruce Schneier
More people are killed every year by pigs than by sharks, which shows you how good we are at evaluating risk.Bruce Schneier
When my mother gets a prompt 'Do you want to download this?' she's going to say yes. It's disingenuous for Microsoft to give you all of these tools [in Internet Explorer] with which to hang yourself, and when you do, then say it's your fault.Bruce Schneier
... if anyone thinks they can get an accurate picture of anyplace on the planet by reading news reports, they're sadly mistaken.Bruce Schneier
We can't keep weapons out of prisons; we can't possibly expect to keep them out of airports.Bruce Schneier
Technical problems can be remediated. A dishonest corporate culture is much harder to fix.Bruce Schneier
Only amateurs attack machines; professionals target people.Bruce Schneier
Beware the Four Horsemen of the Information Apocalypse: terrorists, drug dealers, kidnappers, and child pornographers. Seems like you can scare any public into allowing the government to do anything with those four.Bruce Schneier
The very definition of news is something that hardly ever happens. If an incident is in the news, we shouldn't worry about it. It's when something is so common that its no longer news – car crashes, domestic violence – that we should worry.Bruce Schneier
Not being angels is expensiveBruce Schneier
The lesson here is that it is insufficient to protect ourselves with laws; we need to protect ourselves with mathematics. Encryption is too important to be left solely to governments.Bruce Schneier