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Is antivirus dead yet?

For a long time I've felt that the usefulness of antivirus has been declining and I'm starting to wonder when it will finally die out, or more likely be absorbed into other security products and cease to exist as a standalone product.

Looking at enterprise (and completely ignoring home users …


Changing SSH from port 22

Changing the SSH service to run a port other than 22 is fairly common security practice but I don't like it. The problem is that I find it really hard to argue against doing it, because it works.

What ever else I might say in this post it doesn't change …


Is bad crypto better than no crypto?

I've been reading through bettercrypto.org's Applied Crypto Hardening and really enjoying it. They take a refreshingly practical approach to cryptography books. I've done a couple of cryptography courses, and read Understanding Cryptography cover to cover, which had great video lectures and problem sets to solve. Actually I started …


Password Strength

How to reason about password strength

This is an issue I see come up a lot, it's discussed on Security Stack Exchange all the time. It came up on the Sage-AU mailing lists recently. But every time I see this discussion come up there are misunderstandings, mistakes or people talking …

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