Computer security
Each time you connect your computer to the Internet, it is potentially vulnerable to an attack or a breach. It is therefore important to make sure that your computer is properly protected.
Signs of a breach
- Your computer's performance has decreased and it is running slower
- Your computer starts up differently
- Programs install themselves without your prompting
- Your computer stops responding or frequently stops and re-starts
- Anti-virus software has been desactivated without your knowledge
CAUTION: These symptoms may also be the result of physical or software problems that have nothing to do with a breach.
Caution
A fraudster may:
- Change how your computer works or even take control of it
- Steal your passwords
- Use your computer as a relay to commit offences
- Spy on you
- Send emails using your identity
- Take your personal information
How can you protect yourself?
Actions you can take
- Install and, most importantly, keep your security software up to date (antivirus software, spyware blocker). It will scan your computer to detect and eliminate known viruses and spyware.
- Install a firewall, which will block or monitor connections between your computer and the outside world (the Internet). If possible, get a physical firewall.
- Copy and safeguard important files.
- Completely shut down computers that are connected to the Internet when they are not used for long periods (evenings, nights, weekends, etc.).
Actions that require expertise
- Update your operating system regularly.
- Update all of your software regularly.
- Where possible, avoid using an administrator's account to surf, as all programs run under Windows, for example, have users' rights that launch the programs. If the administrator inadvertently launches a virus, this virus will then have all the rights to change the system.
- Control access to your personal network, particularly your wireless network. You should encrypt your information and choose an effective password for the login user control.
Ressources
- IT Security Resources – Public Safety Canada
- Other websites about computer security
