T is for …

Tailgating

Tailgating is very easy to spot. It’s when you follow someone through a barrier without swiping your entry card, adding your pin number etc. You might have seen someone do this in a car park or elsewhere, following another vehicle in without paying: it’s the same principle.

Trojan

Taking its name from the Trojan Horse of ancient Greek tales, a Trojan is a form of malware in which the malicious code is hidden inside what looks like an innocuous application or other piece of code.

Two Factor Authentication / 2FA

2FA is becoming increasingly common, and is a really good idea for any accounts you may have where you have to enter bank or credit card details. Single (one) factor authentication is usually something your username and password.

With two factor, you’re normally asked either for your fingerprint (on iPhones for example), or you may be sent a code to your registered phone, which you need to enter after your password (PayPal operates like this). It’s really just an extra layer of security, based on something you know (eg your password) and something you have (a fingerprint or code from a mobile devices.

M is for …

MacOS

This is the Operating System used by Apple Macintosh desktop computers, not to be confused with that used by their smartphone and tablet devices which is iOS.

Man in the middle (MITM)

As the name suggests, this is a form of hacking where network traffic or messages are intercepted by someone sitting between the sender and intended recipient.

Typically, the attacker will either take a copy of the traffic so they can see what was being sent, or they will actually change the content of the traffic.

For example, they may change an email which says “I do not want to buy this product” to “I want to buy this product”. It’s therefore quite a dangerous means of attack, particularly as the recipient may not know the messages have been intercepted.

Malware

This is the catch-all term for all types of software which is “bad”, including viruses, worms, trojans and ransomware. Antivirus software is now often labelled Antimalware because it does much more than simply protect against viruses.