USB drives are great devices to use. And we suggest that you use them all of the time. But you have to be very careful with them. You cannot just put them anywhere and forget them.
You cannot always believe what your eyes tell you. You have to check around and make sure that everything is okay before you fully commit to using a service. You have to make sure you have the right link, the right graphics, and the right web address before you should feel safe on a site.
So if you are trying to get into computer security research then do not worry about paying a high price of buying equipment. There are plenty of ways that will allow you to get around the cost.
When you need to make sure that your company is secure there are several ways that you can go. You can hire someone to work permanently for your company and have them protect your system. Or you can bring a third party company in and use them for as long as you think that you might need them.
The web is a lot more complicated now and the tools have to be up to the job. But you have to be sure that you use these tools appropriately to make sure that your website is safe and sound for the people who come to visit it. You cannot just have the tools and not use them to their capacity.