I’ve been involved with technology since the mid 90’s. During the late 90’s, I worked on Unix systems. It was those experiences that lead me to love Linux, taught me to program in C, and helped me learn to automate tasks using various scripting languages. But the 90’s were a much different time for security. Nobody really worried much about hackers or social engineering. And now, over 20 years later, I see people in the workforce that have been robbed of some of the fun I had in the past due to increased security on machines. Of course, increased security is good, I’m not going to argue otherwise. But it has also made a lot of the ‘fun’ from the past no longer possible.
When I was working on old Unix systems, one of my favorite hacks was to set my display to another computer. Since Unix display works as a client/server model, you can actually set your app to appear on any computer monitor you want. So, it was common where I worked to find the most horrible graphic you could and display it on someone else’s machine. Always a good laugh. Other tricks would allow you to play audio on their speakers (great when the individual has fallen asleep at their desk) or turn their keyboard buttons on and off.
Long before the /etc/shadow file, passwords were stored in the /etc/password file. And, since the file was readable by anyone, you could easily grab the entire password list and run it through a tool like John the Ripper. Even more fun, commands like ‘ypcat’ would allow you to get the passwords of all users on the network even if they weren’t on the local machine.
My sister’s first experience with the internet was through a device called “WebTV”. This device was a small terminal that would turn your TV into an internet terminal. It was a cheap, easy alternative to a computer. It also suffered from a pretty simple flaw – you could only have a limited number of emails. (200, I believe.) I found an unsecured email relay – pretty common in the 90’s – and spammed my sister with enough messages to flush out all her email. As you might guess, she was mad.
A New World
How things have changed. Unsecured email servers are much more difficult to find, and Unix is now much harder to hack out-of-the-box. While most of the hacks of twenty years ago were mischievous in nature, today’s hackers are far more sinister. And, thankfully, the world has adapted to become a safer place. Nonetheless, I still look back to the simpler days of computing and the fun we had.