5. Minimize spam
Spam is the Internet equivalent of junk mail in your letter box.

Spam emails are commercial electronic messages that have been sent to you without your consent. Senders often attempt to buy, sell or advertise goods, services, land, investment opportunities and so on through spam. Spam not only clogs up your inbox with annoying, unwanted messages, but also creates a time cost to you in deleting them, and if the problem is particularly bad, there are increased download costs. As well, spam can often contain viruses, worms and trojans.

Software is available to help reduce the inflow of spam. It detects unsolicited and unwanted emails and prevents them from reaching your inbox by searching for suspicious word patterns or other clues that may indicate spam. The filtering software then diverts these messages to (in some cases) a special mail box or location so that you can check through them later and delete those that are spam.

What to do

It is not possible to completely stop spam from entering your email box, however, it is possible to take steps to prevent a large amount of spam:

• install spam filters to stop spam emails getting to your inbox
  
  
• when you receive spam, add the address to 'junk senders' - most mail programs have the ability to block senders, or add them to a 'junk senders' list
  
  
• do not respond to unsolicited mail
  
  
• if the source of an email appears dubious, do not use the 'remove' or 'unsubscribe' link. (These links can be used to confirm that an email account is active, and can lead to even more spam being sent)
  
  
• do not open attachments in messages if the source of the message is unknown or is suspicious
  
  

10 Internet security tips for businesses

Introduction into Business Internet Security

1. Develop a "culture of security"
   
   
2. Install anti-virus software and keep it updated
   
   
3. Install a firewall to block unauthorised access to your computer
   
   
4. Protect yourself from harmful emails
   
   
5. Minimize spam
   
   
6. Back-up your data
   
   
7. Develop your system with secure passwords
   
   
8. Keep your software up-to-date
   
   
9. Make sure your online banking is secure
   
   
10. Develop and maintain a security policy
    
    

Also:

Payment Card Industry - PCI - Compliance DSS

EV SSL Certificates - What you need to know

Further Resources:

PCI Compliance Guide- Complete guide to pci compliance dss

EV SSL Guide:: Complete guide to EV SSL Certificates

Buy SSL Certificates: Online reseller of SSL Certificates including EV SSL Certificates