Some information on computer systems.

Some information on computer systems.

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How to create a secure password.

To create an ideal secure password. It would be lengthy, contain uppercase and lowercase characters, contain symbols and is easy for you to remember. Passwords are the key to security. If you have a secure password you have a secure account. hint It makes good practice in doin this.

There are 5 steps you can do to make your password secure:

1. Think of a sentence that you can remember.
2. Check if the computer or online system supports the pass phrase directly. (If you can use spaces of symbols, use them)
3. If the computer or online system does not support pass phrases, convert it to a password.
4. Add complexity (Mix lowercase, uppercase, symbols, spaces)
5. Finally, substitute some special characters. If it won’t let you use symbols. Try to make it long and simple to remember. T he odds will go up in great favour of you for people not getting your password(s). Here’s an example of a strong password: -Do$keys_LiTTle-p4ss-

What is spam and how to fight it. Spam can be very irritating. Junk emails sent to your email account trying to get you to buy something, or even register on a site. So you end up with an email inbox full of unwanted junk emails.You can help fight spam by registering the junk emails into the junk folder. With Ms Outlook or Hotmail you can easily mark off which emails you want to go into the junk folder. This way when emails get sent from that email address, all emails will be redirected to the junk folder. They can also get automatically sent to the junk folder if the sender has a bad reputation of junk mail. Spam can also get detected by key words from inside the email.

What are Firewalls and what are they used for? Firewalls are used to monitor and control the ports on a Network. It also helps against people from outside the Network trying to access certain ports restricted only to the Network. If you wanted to open a port to allow for inbound connections from outside the Network through that port, you use port forwarding. Some Firewalls can also help against DoS attacks. A firewall is normally built into the router. Hardware firewalls are inside the router. They help protect unwanted users from accessing inside the network. A software router is what

What are viruses and what do they do? Viruses are malicious Applications that are designed to exploit people. You can get many different types of viruses (e.g. Trojans, Worms, Key loggers, Adware and more). Trojans can give hackers remote access to the computer if the antivirus doesn’t detect it and the Firewall is properly maintained. Many viruses can be attached onto software downloaded from the internet or created on a CD. More clever viruses can use your computer as a DDoS tool. DDoS is used as a hackers tool to try and make a server go slow or even halt. This is used by getting lots of computers, normally in the thousands to keep requesting sessions from the server. Some viruses can be very destructive and delete your files. To help protect against these threats you need a good antivirus and it needs regularly updated. Also do a full system scan of your computer every few days.

What is Phishing? Suppose you find a email in your inbox from your bank. It asks you to send some details out. You don’t hear from them soon after you send the details, you start getting worried. Phishing is a way of doing online identity theft. It’s just people trying to get your details. Most people associate Phishing with emails that have been spoofed, or mimic bank, credit card companies or other businesses like eBay or YouTube. To help avoid this happening don’t ever give out your details over a email address. Not even if it’s your bank, your bank isn’t permitted to ask for your details. Hotmail has an anti-phishing system where it automatically deletes the emails sent by the phishing site depending on the sender’s reputation.

What are Zombie Computers? Zombie computers are all the computers that the Trojan is on, they get called Zombie computer because the clients that have the Trojans generally don’t even know they have the Trojan. Zombie Computers are victims of Trojans without the victim even knowing he is a victim. An example is a DDoS tool by hackers. DDoS stands for distributed denial of service, this means that hackers can use your computer and all the other computers that the Trojan is on, use up your bandwidth and use all the bandwidth to start sessions on the web site and can overload the server to a halt. To help secure against Zombies, get a good antivirus and update it regularly and do a full scan of your system regularly.

Nicholas Wood BTEC First diploma Unit 2 Computer systems

Signed 'DosKey'