Browse our wide selection of free security logos for security guards and officers. Our high quality, vector format security company logos are great for law enforcement, private contractors, and military firms.

Welcome to the Official Badge Generator. Enter some text, choose a an emblem, pick your colors, and click the 'Go' button. A Badge will be generated for you. Collect 'em, trade 'em, put 'em on your website, or e-mail 'em to your friends.

The financial crisis has led to a widespread loss of trust in financial intermediaries of all kinds, perhaps helping to open the way towards the general acceptance of alternative technologies. This paper briefly summarises the crypto-currency phenomenon, separating the ‘currency’ issues from the potential technology benefits.

O2 is an opensource amplifier designed by brilliant engineer NwAvGuy, with emphasis on benchmark performance and low cost. O2 arrives fully assembled, hand tested, and ready to enjoy.

SQLCipher is an open source library that provides transparent, secure 256-bit AES encryption of SQLite database files.

ownCloud supports simple version control for files. Versioning creates backups of files which are accessible via the Versions link. This link contains the history of the file where you can roll back a file to any previous version. Changes made at intervals greater than two minutes are saved in data/[user]/versions, and made accessible using the above pages.

Testing the security of the Jabber/XMPP network.