Computer security.

Computer security.

1. Firewall

   • Prevents harmful data entering your computer.
   • Used to help protect a computer network from intruders.
   • Used when program is trying to connect to another network.
   • Controls which programs can send and receive data packets.
   • Used when program is trying to connect to another network.
   • A firewall is needed because it protects your computer from dangerous downloads or viruses. If you were not to use it a bug might take over your computer.

2. Anti- Virus

   • Quarantines (Quarantine meaning isolating files away from the dangerous virus) any programs or files which are harmful. You need to isolate it because otherwise the malware would spread to other files.
   • Scans your computer periodically, (periodically is when a scan happens every certain hour for example, 6pm every night.)
   • Protects against malicious software.
   • Should be used on email attachments and downloads.
   • Needs updating regularly to make sure that it knows the latest threats.
   • An Anti -virus program is needed because it protects your whole computer from everything bad that could attack it. Plus the anti-virus program has to update regularly.

3. Encryption

   • You make the usual alphabet letters in to messed up letters so that it doesn't make grammatic sense.
   • To encrypt a message you need a cipher which is also a method for code breaking.
   • Encryption makes a message code and makes it not possible to read without a key.
   • To decrypt a code you need a key to help find out the meaning of each letter.
   • For example, encryption was used in world or 2 and 1 because it helped to code the Germans messages to each others.

4. Computer security

   • When buying things and products online you have to be very careful about what website your using especially when the website has a https or not,
   • Sometimes when you receive emails about your "bank" and it states you need to verify your bank statements click the link below. That's usually a scam trying to get you to click it and then hack your account and take your money out. This is a common way of accessing peoples information and it is called Phishing.
   • Sometimes you can get lured into a clicking or downloading dangerous links or files. Which could damage or hurt your computer.
   • Sometimes you can download dangerous attachments and it wont damage your computer for the first couple of days but overtime it could probably break your computer all together.
   • If the website your logging into doesn't have a https then your probably logging into a fake website and they will take your personal information.
   • If you write a secure password with over 8 different characters the there is less possibilities of your accounts getting hacked.
   • Secure passwords
     • When creating a secure password you need to make sure that the letters or numbers in the chosen password are a minimum of 8 characters, to make your password even more advanced you could add alphanumeric, lower case and higher case, signs and definitely not dictionary words.
     • Some password ideas could be: c4td069_ , b6b74b95@ , Lu8iA3nA , E8l8An14

5. Malware

   • A worm is a malware that is a standalone computer virus, that duplicates itself in order to spread to different computers and hack them.
   • A Trojan horse virus is a common malware and it tricks the user to hack their own computer. An example is when you click a dangerous link in your email inbox and it leads you to a fake website.
   • A zombie virus is a malware that takes over a complete network of computers.Usually they hack internet connections and whoever connects to the Wifi it slowly hacks and damages your computer.
   • A Malware is a subject referring to a malicious software.