It depends...either they will most likey prevent pregnancy and STDs, you might be able to conquer an empire using one, or if your unlucky enough to get one on your computer your in for at least a couple days of cleaning, defraging, and pissing off anyone you (or the virus) sent email too while infected, or you might just find yourself buying a new computer. A updated anti-virus program will prevent you from ever meeting one.
Any damage, right after it gets in.
More precissely, it can do just anything you can do and anything your programs can do (including reading and deleting your files, reading your keystrokes including passwords, reading your emails, sending a lot emails, distribute viruses, manage your bank account...), ...
... right after it is downloaded AND opened/activated/executed/started/installed/...
This ancient soldiers in horse had perhaps to wait until evening before they snaked out,
but in computer it does not have to wait (although it can wait for years, too :-)
By analogy, this ancient soldiers could do ... just (almost) anything that everybody inside could do, including opening the doors for unanimous friends.
A Trojan horse is a type of virus disguised as something good but when you open it it does it's damage.
yes there was a Trojan Horse.
A Trojan Horse.
The Trojan horse was pulled into Troy, hence 'Trojan'.
There aren't types of Trojan Horse virus. A Trojan Horse is a type of virus.
The Trojan Horse
The Trojan Horse was a very successful distraction to allow the Greeks to infiltrate the town of Troy. The Trojan Horse was used during the Trojan war.
No city was named after the Trojan horse.
The Trojan horse was made out of wood.
The Trojan Horse is a historical fiction novel.
'you need a Trojan horse to create a Trojan virus' LOL , Trojan Horse itself is a Virus !
a trojan is a horse or computer virus that looks like a good thing but is not. a trojan is just and old horse.