System Security

System Security

1. Threats to Networks

   • Malware
     • Malicious software designed to harm people's devices and steal data
   • Phishing
     • Manipulating people into giving you access
       • Phone calls
       • Email links
   • Brute Force Attacks
     • Programs try every combination to 'brute force' their way in
   • DDOS
     • Flood network with requests
       • Server shuts down
   • Data Interception and Theft
     • Packet Sniffer
     • Gain access to data being sent across a network
   • SQL Interjection
     • Use SQL commands to manipulate the system
       • Gain access to user data
   • Poor Network Policy
     • Not properly informing users of dangers and how to avoid them

2. Identifying and Preventing Vulnerabilities

   • Penetration Testing
     • 'White hat' hacking
     • Employed to find security weaknesses
   • Network Forensics
   • Network Policies
     • Rules
     • Examples
       • Change passwords
       • Don't click on unknown links
   • Anti-Malware Software
     • Detects and alerts the user of potential malware
   • Firewalls
     • Prevents unauthorized access
   • User Access Levels
     • Some users have access to more than others
   • Passwords
     • Secure codes that grant access
   • Encryption
     • Scramble Data
     • Need key