Building a Secure Server from Default Ubuntu

October 28th, 2011 by peter.bassill

I have been asked on a few occasions if I would put together an outline on how to build a secure server from scratch. Having thought the topic through on a number of occasions and having tried to write this blog article on what is probably nearer 20 times I finally bit the bullet and got on with it.

In this post, I will explore how to take a default Ubuntu install, in this case it is 11.04 server, and build it as a secure web server.

 

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Digital Forensics – Project Ebay

September 2nd, 2011 by peter.bassill

Update 2

I now have processed 20 drives from a reasonable spread of reclamation businesses and private individuals and thus far only three drives have failed to give up the previous owners information. That is a good return for me, and a very poor display for information security practises. The home users I am not too surprised with, but still the corporates are getting this wrong. I am certain that the business entities engaging these reclamation organizations who are reselling this equipment on ebay would be shocked that in many cases the drives were just formatted.

Of course, all of these drives have now undergone a DoD 7 pass wipe to make sure they are completely erased, but the top 5 data sets recovered are:

  1. Email
  2. Corporate documents
  3. iTunes collections
  4. Personal photo’s
  5. Personal Identifiable Information

 

 

Digital Forensics – Project Ebay

July 17th, 2011 by peter.bassill

Update 1

Project Ebay is moving along very nicely. To date 10 drives have been purchased across a reasonable spread of reclamation businesses and private individuals and thus far each and every drive has given up the previous owners information. That is a 100% success rate at recovering previous owners data.

Of course, all of these drives have now undergone a DoD 7 pass wipe to make sure they are completely erased, but I have pulled back:

  • Email
  • Banking records
  • iTunes collections
  • Personal photo’s
  • Very very personal photos
  • University assignments
  • Source code
  • CAD images

The home users I am not too surprised with, but the corporates? I am certain that the business entities engaging these reclamation organizations would be shocked that in many cases the drives were just formatted, and in one case the all I needed to do was hook the drive up and mount it.

 

Infosec 2011 – Journey Of A Social Media Attack

March 11th, 2011 by peter.bassill

Infosec Europe 2011 – 19th to 21st April, Earls Court

Join Peter Wood and myself as we explore the world of social media attacks – http://bit.ly/eK14wY

Human side of Security

February 11th, 2011 by peter.bassill

One of the hot topics for many information security officers and almost all suppliers within the IT security industry at present is data loss prevention.

For many information security officers (ISOs) and IT directors, not a week will pass without a supplier calling to talk about and sell a data loss prevention solution that is hailed as a way of controlling data egress points.

From the products I have tested, I can say that they do what they say on the packaging, but in this economic climate, when boards are mandating decreased budgets and businesses drive for lower operational costs, is there another way of achieving a similar result without large capital outlay?

Good increases in data management can be achieved through a good information security awareness programme. A good awareness programme can make significant strides to decrease accidental loss of data, which is by far the most common cause of data breaches, and then use technical solutions to assist and complement the work of the awareness programme. Awareness programmes take time to set up and need buy-in from the very top of the business. Key executives are usually happy and eager to help; they see both the security benefits and the benefits of lower operating costs.

For example, the use of portable media has caused many businesses a large headache and has lead to a number of high-profile data breaches. By educating your staff on the virtues of good data management around portable devices and ensuring a good understanding of classification labels and how to protect data within certain classifications, staff have shown they are capable of adequately protecting data and correctly using portable media devices.

This is not to say that you should not complement the training by issuing only encrypted portable devices and controlling data written to non-encrypted devices. In taking this step you reinforce the training and show the workforce that you are taking the matter seriously.

By viewing technology as an assistant to good information security practices rather than the primary enabler to information security you are better placed to view the options open to the business, taking a broader spectrum view of your business practices allows you to better understand where information security gains can be achieved easily and where gains will take longer to realise.

An excellent area within the realm of information security where the people element returns excellent gains is in penetration testing. By engaging different business unit members in internal penetration testing it is possible to identify where processes are not working and could lead to potential security issues. Using this method of penetration testing in conjunction with traditional external testing you get a fuller and more rounded view of your overall security stance. This will help in identifying the many egress routes that data could potentially take out of the business.

A good security awareness programme will not safeguard against those rouge employees that want to take the data with them, however. This is where there is no replacement for the technical counter-measure. But with an awareness programme in place, employees will be aware of what will happen if they are found to have taken data and the HR department will have an easier time of dealing with these employees if you can prove they are fully aware of the policies and have taken part in the awareness training.

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