The system comprised four defensive lines arranged in formidable layers:

• The brick-lined ditch, divided by bulkheads and often flooded, 15­20 meters wide and up to 7 meters deep.
• A low breastwork, about 2 meters high, enabling defenders to fire freely from behind.
• The outer wall, 8 meters tall and 2.8 meters thick, with 82 projecting towers.
• The main wall—a towering 12 meters high and 5 meters thick—with 96 massive towers offset from those of the outer wall for maximum coverage.

Behind the walls lay broad terraces: the parateichion, 18 meters wide, ideal for repelling enemies who crossed the moat, and the peribolos, 15–­20 meters wide between the inner and outer walls. From the moat’s bottom to the highest tower top, the defences reached nearly 30 meters—a nearly unscalable barrier of stone and ingenuity...

You bet your ass we’re all alike… we’ve been spoon-fed baby food at school when we hungered for steak… the bits of meat that you did let slip through were pre-chewed and tasteless. We’ve been dominated by sadists, or ignored by the apathetic. The few that had something to teach found us willing pupils, but those few are like drops of water in the desert.

This is our world now… the world of the electron and the switch, the beauty of the baud. We make use of a service already existing without paying for what could be dirt-cheap if it wasn’t run by profiteering gluttons, and you call us criminals. We explore… and you call us criminals. We seek after knowledge… and you call us criminals. We exist without skin color, without nationality, without religious bias… and you call us criminals. You build atomic bombs, you wage wars, you murder, cheat, and lie to us and try to make us believe it’s for our own good, yet we’re the criminals...

So from the beginning I put password protection on my gateway. This had been done in such a way that even if UK users telephoned directly into the communications computer provided by Darpa in UCL, they would require a password.

In fact this was the first password on Arpanet. It proved invaluable in satisfying authorities on both sides of the Atlantic for the 15 years I ran the service ­ during which no security breach occurred over my link. I also put in place a system of governance that any UK users had to be approved by a committee which I chaired but which also had UK government and British Post Office representation...

Morris and Thompson’s work brought much-needed data to highlight a problem that lots of people suspected was bad, but that had not been studied scientifically. Their work was a big step forward, if not for two mistakes that would impede future progress in improving passwords for decades.

First, was Morris and Thompson’s confidence that their solution, a password policy, would fix the underlying problem of weak passwords. They incorrectly assumed that if they prevented the specific categories of weakness that they had noted, that the result would be something strong. After implementing a requirement that password have multiple characters sets or more total characters, they wrote:...

It’s a wonderful talk: funny, engaging, wise, prescient. Remember that talk was given in 1982, less than a year before the ARPANET switched to TCP/IP and the internet went operational. She was a remarkable person.

Listening to it, and thinking about the audience of NSA engineers, I wonder how much of what she’s talking about as the future of computing—miniaturization, parallelization—was being done in the present and in secret.

Basically, the recording is in an obscure video format. People at the NSA can’t easily watch it, so they can’t redact it. So they won’t do anything.

With digital obsolescence threatening many early technological formats, the dilemma surrounding Admiral Hopper’s lecture underscores the critical need for and challenge of digital preservation. This challenge transcends the confines of NSA’s operational scope. It is our shared obligation to safeguard such pivotal elements of our nation’s history, ensuring they remain within reach of future generations. While the stewardship of these recordings may extend beyond the NSA’s typical purview, they are undeniably a part of America’s national heritage...

There are many interesting things in the 800 pages of newsletter. There are many redactions. And a 1994 review of Applied Cryptography by redacted:

Applied Cryptography, for those who don’t read the internet news, is a book written by Bruce Schneier last year. According to the jacket, Schneier is a data security expert with a master’s degree in computer science. According to his followers, he is a hero who has finally brought together the loose threads of cryptography for the general public to understand. Schneier has gathered academic research, internet gossip, and everything he could find on cryptography into one 600-page jumble...

This paper discusses the protocol used for electing the Doge of Venice between 1268 and the end of the Republic in 1797. We will show that it has some useful properties that in addition to being interesting in themselves, also suggest that its fundamental design principle is worth investigating for application to leader election protocols in computer science. For example, it gives some opportunities to minorities while ensuring that more popular candidates are more likely to win, and offers some resistance to corruption of voters...

I wrote the essay below in September 2013. The New Yorker agreed to publish it, but the Guardian asked me not to. It was scared of UK law enforcement, and worried that this essay would reflect badly on it. And given that the UK police would raid its offices in July 2014, it had legitimate cause to be worried.

Now, ten years later, I offer this as a time capsule of what those early months of Snowden were like...

The file details a number of bugs found at Soviet diplomatic facilities in Washington, D.C., New York, and San Francisco, as well as in a Russian government-owned vacation compound, apartments used by Russia personnel, and even Russian diplomats’ cars. And the bugs were everywhere: encased in plaster in an apartment closet; behind electrical and television outlets; bored into concrete bricks and threaded into window frames; inside wooden beams and baseboards and stashed within a building’s foundation itself; surreptitiously attached to security cameras; wired into ceiling panels and walls; and secretly implanted into the backseat of cars and in their window panels, instrument panels, and dashboards. It’s an impressive—­ and impressively thorough—­ effort by U.S. counterspies...