It’s interesting in that shell scripts (small one’s) seem just like friendly bits of code that you can run. That’s not always the case, it’s probably never a good idea to just download a script and run it (esp using curl or wget). I discovered this very interesting article the other day about terminal escape injection and it works on pretty much every platform – mac, windows linux and even within python!
When in dought use cat -v in fact cat -v may be my new default for viewing code!
A while back I wrote sshfail. It’s a script to look at attempts on the ssh protocol on servers. You can find it up on git hub if your interested and want to install in your self. https://github.com/nevetsanderson/sshfail .
The interesting thing is that even if you use a non standard port to run ssh on (which is what this data relates to) it’s only a matter of time before modern hackers or bots or some Bs8dutard’s find that information and it gets propergated. Have a look at this raw data.
Date
Attempts
ips
1/3/2020
28
28
1/4/2020
239
129
1/5/2020
204
125
1/6/2020
337
106
1/7/2020
322
167
1/8/2020
386
142
1/9/2020
452
195
1/10/2020
273
169
1/11/2020
5873
197
1/12/2020
4346
116
1/13/2020
8892
191
1/14/2020
6192
128
1/15/2020
0
0
As you can see things got ugly after about 11 days… from 28 to 5873 attempts on the server per day and within 2 weeks. Also worth considering is how did things go from weeks of no one being able to detect this, to 28 ip address suddenly finding my machine on the same day and then it increasing to 195 (Jan 3-9). I’d love to know what’s going on in the background. How is information is being propergated?
So as you can also observe on the 15 th, I changed the port and things have been have quiet since then but the issue is… If I hadn’t been observant and actually looked at the numbers then I’d be giving the bad guys a chance at reeking havok…
Stay safe out there people, and actually look at your log data!
So I’ve been thinking a lot of late about machines, exploits and how to stop this sort of thing. I’ve been in situations where developers have created “stuff” on production machines and then left the company. The problem then becomes interesting if that code does not work with an up dated version of the software say wordpress, drupal or the operating system.
Your then in a situation (if the machine is a web server or open and available on the net) where about the only thing you can do is lock down the firewall and harden the old un patched OS and hope that no one finds a way in / attacks the machine.
It’s always good to have at least 2 people who understand custom code in any company especially if you have a number of web servers to mange. But even then re building something and re creating that functionality is not always easy – and management need to be aware of the fact that this will take time and cost money.
So if that keen shiny developer comes along one day promising you a widget that will sell your own grandmother and only cost you a few hundred bucks worth of con-sultan fees, my advice is to run screaming from the room.
The up shot I’m trying to put to you? Have the ability to own your own code – because if you don’t and if it gets hacked or is found to be vulnerable it’s going to cost you!
A simple approach is best – easier management and long term savings.
The authors inner sprit animal when it comes to warm calling people…
So that was it – a week at Cyrise cyber boot camp for entrepreneurs of Australian cyber security. In a nut shell it was mind blowing! If your an Australian and you think you might have a great cyber security based idea, then this is a gig you must get in on.
Be prepared as your going to learn stuff, real important stuff, like being sat down in front of an excel spread sheet. Asked to crank on some initial financial projections by an experienced accountant (who has put some of his own money into startups).
Your going to have to get up in front of people and be able to talk about your product. Explain what it does and why it’s valuable, your going to learn to pitch and why it’s bloody important!
Calling industry people you don’t know on the phone to talk about your product (this really pushed my inner introvert I can tell you). I probably stunk like an old goat at the end of it (I could feel the sweat dripping off me) but hay that’s pushing your boundaries and learning.
If you have a great idea and have been thinking about it. Get into the next round you won’t regret it.
In closing I’d like to offer a big heart felt thanks to all the people who participated and contributed to our boot camp. But especially those on the coal front…
KIRSTIN MCINTOSH – Multitasker and social networker supreme (also the person who had faith in my idea).
CHLOÉ DUTSCHKE – Creative, marketing and brand guru who also kept us all very well fed (She also does a mean pod cast).
SCOTT HANDSAKER – The quiet guy at the back doing all the email stuff.
ALLEN JONES – (Not the bad one) Mr cool calm and collected who taught us all how to stand like gun slingers!
