The 1×1 of IT & Aerospace - our glossary

Almost everyone has had experience with Internet offers for Viagra, unheard-of chances of winning, almost free health insurance or even penis extensions, most of which arrive uninvited in the mailbox. A spam filter is a program or module that prevents such...

The Sender Policy Framework (SPF) was created to combat unauthorized tampering with IP addresses on mail servers. In essence, the administrator of a domain assigns the IP addresses of all authorized senders ('Mail Transfer Agents' - MTA) for the mail recipient...

The Secure Sockets Layer (SSL) has long been the encryption protocol for secure data transmission on the internet. However, the cryptological lead is only ever razor-thin, and hackers are always hot on the heels of security experts. Which is why today the old...

Not every workstation needs a fully equipped PC with all the technical refinements. A 'thin client' is a desktop computer that has no moving parts at all, i.e. no hard disk, DVD drive etc.. Instead, it uses the resources of the...

Transport Layer Security (TLS) has replaced the Secure Sockets Layer (SSL), while retaining many of its functions. TLS is an attempt to create a high-security wing for transmitted data on the internet. Five protocols are intended to...

The 'Trojan horse' or 'Trojan' for short has long since replaced the virus as a threat to IT systems. Today, 55% of malware are Trojans, only ten percent are viruses. As a rule, Trojans do not aim to destroy computers, they want to...

In earlier versions of Windows, the user of this system software was also the captain of his ship. Even if he was not the brightest in terms of computer technology. They had full administrator access to their system at all times - making it extremely vulnerable...

An equally underestimated and great danger for any computer technology is the cleaning lady. Cables run from almost all tabletop computers to the connection sockets in the wall. But the cleaner only has her hygiene in mind. Every cable, which often enough runs freely across the floor...

Encryption transforms 'plain text' into 'ciphertext', which the recipient can only read if they have the right 'key' to decipher it. The process is old, its use began long before the 'digitalization of the world'. Not only...