Introduction to Information Security

TEMPEST certification

• Certificates must apply to entire systems, not just to individual components, since connecting a single unshielded component (such as a cable) to an otherwise secure system could easily make it radiate dramatically more RF signal.
• Users who must specify TEMPEST certification could pay much higher prices, for obsolete hardware, and be severely limited in the flexibility of configuration choices available to them.
• A less-costly approach is to place the equipment in a fully shielded room.

Computer Systems Security

Protections against data loss or break

What is Data Loss?

• Data loss is when information systems are corrupted, deleted, or unrecoverable.
• It most commonly occurs due to neglect in storage, transmission, or processing.
• Data loss is distinct from data unavailability – which is primarily caused by power outages – and from a data breach – which refers to your data being stolen.
• However, data loss has been used interchangeably with data breach, since cybercriminals don’t always give your information back, or corrupt it in the hacking process.

7 Types of Data Loss

• Hard Drive Failure
• Viruses and Malware
• Computer Theft
• Fire Damage
• Water Damage
• Accidental Deletions
• Power Failure

7 Ways to Prevent Data Loss

Now that you know how much danger your computer faces every day, let’s take a look at how we can mitigate these threats and prevent data loss.

Backup
The #1 most important preventative measure against data loss is to backup all of your data.
Here a few tips about data backup that’ll help you do it effectively:

• Keep at least one copy of your original data on a separate disk than the one in the computer you’re backing up.
• Store your data backup on a separate site.
• Verify your backup data isn’t corrupted, invalid, or incorrect before disaster strikes.