Reverse Hash Calculator

A few months ago, while reading some news, I found this website where you can enter a md5 or sha1 hash and have a good change of 'hitting' the original value. I don't think it affects digital signatures of documents at all but it is definitely something that network/system administrators should be looking at.

Check the photo below that a friend of mine sent me a while ago, it made me laugh a bit:

Regards,
Tulio de Souza

21st century ...

Regards,
Tulio de Souza

* Original location

The fun theory

Hello All,

Earlier today I was reading some news using google reader and a friend of mine shared with his friends these two videos below. They show how small creative changes can modify people's behaviour. The idea behind these videos is known as "The fun theory".

The first one shows a set of stairs transformed in a big piano:

The next video creates the illusion of a really deep bin:

It is amazing how such small things can make people exercise or throw more rubbish into the bin.

Regards,
Tulio de Souza

Write in C ...

My cousin has just sent me this video and it might not make sense to non-technical people. But it is interesting the creativity of some guys. You may watch down here or through this link.

Regards,

Tulio de Souza