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Github recently introduced hugely improved code search, one of those rare moments when a service I use adds a feature that directly and measurably measurably improves my life. Predictably, there was soon a flurry of breathless stories about the security implications. This shouldn't have been news to anyone - by now, it should be clear that better search in almost any context has security or privac
cortesi - Go: a nice language with an annoying personality
Last week, I had the pleasure of attending Dropbox's annual company hack fest. It was a great opportunity to get a look at how Dropbox works internally, and mingle with the smart and driven folks who make one of my favourite products. In the spirit of hack week, me and my friend @alexdong decided to do our project in Go. We'd both wanted to explore the language, but had never quite been able to ma
cortesi - The UDID leak is a privacy catastrophe
Something I've been worrying about for a long time has just happened: Antisec has leaked a database with more than a million UDIDs. The UDID issue has been a bit of a white whale of mine - I've written many blog posts about it and spent more hours than I care to think negotiating responsible disclosure with companies misusing UDIDs. Let's recap some of the posts I've written about this: In May 201
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Edit: Since this post, I've created an interactive tool for binary visualisation - see it at binvis.io Last week, I wrote about visualizing binary files using space-filling curves, a technique I use when I need to get a quick overview of the broad structure of a file. Today, I'll show you an elaboration of the same basic idea - still based on space-filling curves, but this time using a colour func
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Edit: Since this post, I've created an interactive tool for binary visualisation - see it at binvis.io In my day job I often come across binary files with unknown content. I have a set of standard avenues of attack when I confront such a beast - use "file" to see if it's a known file type, "strings" to see if there's readable text, run some in-house code to extract compressed sections, and, of cou
cortesi - A Farewell to ORMs
I've been using ORMs for years, starting with my own hand-hacked library back in the days before there were good ORMs for Python, and more recently settling into a comfortable reliance on SQLAlchemy. Over time, though, my initially rosy feelings towards ORMs have begun to sour. I gradually realised I was spending a disproportionate amount of time trying to coax the ORM into doing my bidding - and
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cortesi - The trouble with social news
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cortesi - Reading Code: In praise of superficial beauty