Category Archives: Technical

Category for technical content.

The New Mirai

According to one news report, a new version of Mirai has recently been released causing an increase in the number of scans against port 2323 and port 23. According to our firewall logs, the number of scans against tcp/2323 has … Continue reading

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KRACKing Wireless

The latest big security exploit is a mechanism by which WPA2 secured wireless networks can be compromised to disclose previously encrypted traffic in the clear, and to insert malicious traffic. The original web site announcing the vulnerability can be found … Continue reading

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Patching Your Mouse? Yes, Really!

Strange as it may seem, if you have a certain type of wireless mouse you may be vulnerable to an attacker being able to inject keyboard keystrokes into your computer; with this they are able to do just about anything … Continue reading

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Updating Windows Servers

You might think it is easy to update Windows servers, but apparently that is not always the case. It is easy to simply “check for updates” when you first install a server, and then forget about it. Which is the wrong … Continue reading

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How SHA-1 Is Broken

(This gets very esoteric very quickly) Those of you paying attention may have realised that very recently (January this year), browsers started complaining about security when connecting to sites whose SSL certificates used the SHA-1 hashing algorithm within the certificate. … Continue reading

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Friday’s DDoS Attack And The Mirai IoT Worm

It may have reached your attention that there was a significant denial of service attack against a widely used DNS provider – the service provider for organisations such as Twitter, Github, and Amazon. The effect was to make certain services … Continue reading

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TeamViewer: People Being Hacked

There are many reports that those using the TeamViewer application are being subjected to hacks with their bank accounts being emptied and similar problems. The details of how the attackers are breaking in are not available, but it seems likely that … Continue reading

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Apache: Using X-Frame-Options To Evade Click-Jacking

Click-Jacking. It tells you all about it on the Wikipedia article. This posting is about how to avoid security scans telling you to disable click-jacking, if you are using the Apache web server software. If you’re using IIS, you are … Continue reading

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The Xcode Ghost In Your Apps

We are seeing a number of instances where people have installed legitimate applications from the Apple App store, and their phone is communicating with the Xcode Ghost malware infrastructure across the network. This sort of malware infection is a bit unusual … Continue reading

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Windows Server Updates: Use The Proxy

This is a more technical note than usual because I happened to have a Windows 2012 server that was refusing to see any Microsoft updates. And as someone who goes around telling people to patch their servers, it is somewhat … Continue reading

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