Abtrusion Security Click here to send someone a link to this page Click here to Bookmark this page
home   products   buy   download   support   about   news   links   contact

Abtrusion Security home

Security products

Purchase Abtrusion Protector

Download of security software for Windows

Abtrusion Protector support

About Abtrusion Security

Security related news

Security links


Download Abtrusion Protector


Information for

> Corporate Management

> System Administrators

> Security Professionals

> Software Developers

> Home Users

How does Abtrusion Protector protect my computer?


What are the system requirements for Abtrusion Protector?


How does Abtrusion Protector know which software should be allowed to run?


What if I am already hacked? What if I am already infected by a virus?


Does Abtrusion Protector protect me against the BugBear virus?


Does Abtrusion Protector protect me from macro viruses?


Does Abtrusion Protector protect me against buffer overflow attacks?


What is the difference between Abtrusion Protector and Software Restriction Policies?


How do I obtain Abtrusion Protector?


What if two files have the same digital thumbprint?


How does Abtrusion Protector affect the performance of my computer?


Will Abtrusion Protector make my notebook computer run out of batteries faster?



What if two files have the same digital thumbprint?

Abtrusion Protector uses digital thumbprints of files to determine which files are allowed to execute. What if a hacker sends me a file with the same digital thumbprint as one I already have installed? Well, this will never happen. Although theoretically two different files can have the same digital thumbprint this is so unlikely that it will never occur.

Abtrusion Protector uses the SHA-1 algorithm to generate its digital thumbprints (also known as cryptographic checksums or hash values). It is one of the best studied hash algorithms and is considered very safe. It is the basis of almost all digital certificates and encryption protocols in general use today.

Here are some statistics for you:

It would take about 30000 computers, each generating a million different files a second for a million years to come up with two different files with the same thumbprint.

To come up with a file that has the same thumbprint as one of the executable files already on your hard disk, it would take ten billion computers, each generating a billion files each micro-second for at least ten billion years.