Select Page
Petya Ransomware Information

Petya Ransomware Information

Over the course of the past 24 hours, a new Ransomware campaign has been launched against organizations around the globe, mostly in Europe and specifically in the Ukraine. This campaign appears to be leveraging a new variant of the Petya (or Petrwrap) Ransomware....
3 Rules for Email

3 Rules for Email

#1 Secure your email account Your email account is the central point of your digital life. If you lose access to it, or more importantly if someone else gains access to it the damage can be catastrophic. Every service you use online links back to your email address....
Modern Day Peering Disputes

Modern Day Peering Disputes

CloudFlare went on the offensive this week with their peering disputes. Maybe I should frame this as CloudFlare’s desire to peer with the regional monopolies that basically refuse to peer with anyone: there are six expensive networks (HiNet, Korea Telecom, Optus,...
DDoS Emotions, Acceptance and Mitigation

DDoS Emotions, Acceptance and Mitigation

Artur Bergman is the founder and CEO of Fastly. He was CTO at Wikia, managed LiveJournal’s engineering team, and was an operations architect at Six Apart. He gave a keynote at Velocity recently talking about DDoS attacks and their impact on your team....

The Power of FreeBSD

As an odd consequence of being so stable. I find our FreeBSD boxes are always running EOL software. Then the struggle starts of not wanting to upgrade because the box works perfectly fine. This one for example is being upgraded to 10.0-RELEASE via a quick stop at...

Open Source Progress

I've been doing some spring cleaning in my hard drive and stumbled across these Apache + modssl/OpenSSL + modperl/Perl installation instructions from over a decade ago. It's really remarkable how far Open Source has come in that time. Steps: # extract the...

Puppet Environment Errors

This morning I found one of our Puppet installations in a state of total fail. Specifically: May 25 16:22:47 www-app01 puppet-agent[7779]: Could not send report: Error 400 on SERVER: no 'environments' in...

95th Percentile Billing

What is the 95th percentile? The 95th percentile is a method for metering bandwidth that allows a customer to burst over their Committed Information Rate (CIR). Unlike a fixed network link, a customer is able subscribe to a CIR at a fraction (usually 10-20%) of the...

Formula to Calculate Margin

Just because I see this so often in spreadsheets: Costs * 1.Margin = Resale The proper way to apply a margin to your cost is: Cost / ( 1 - Margin) = Resale It makes a big difference on the final number: 100 * 1.3 = 130 100 / ( 1 - .3) = 142.86 If you do it the first...