Security Systems

Security Systems

1. malware

   • preventing
     • strong security software
       • enable OS updates
         • caution opening attachments
           • backup all files
   • effects
     • computer may crash
       • connection will become slow
         • files may be deleted
   • malware is software used to disrupt computer systems,and to get access to private systems.

2. phishing

   • effects
     • access someones account and withdraw money from it
       • open new bank or credit card
         • gain access to high-value corporate data
   • preventing
     • strong security software
       • spot fake websites and emails
         • never give away personal information.
           • ignore popups
   • phishing is when a bank or credit card is accessed by someone who will be able to withdraw money.

3. Data interception and theft

   • effects
     • • Discovering username and password credentials
       • Gaining access to systems
         • • Disclosure of corporate data
   • prevention
     • • Strong encryption.
       • • Using virtual networks.
         • • Staff training: use of passwords, locking and portable storage devices
           • • Network forensics
   • An attacker monitors data streams to or from a target, in order to gather sensitive information.

4. brute force attack

   • effects
     • theft of data
       • access to private computer systems
   • prevention
     • • Network lockout policy: locks out after a number of tries.
       • • Staff training: using effective passwords that contain symbols and numbers.
         • • Challenge response tests e.g. reCAPTCHA – user has to look at a picture and answer a question.
   • A brute force attack is a trial and error method used by programs to decode data such as passwords or Data

5. Denial of service attack

   • effects
     • • Revenue losses: downtime affects profits. Based on industry surveys, the average cost of downtime is over £4000/minute
       • when critical network systems are shut down, your workforce’s comes to a halt.
         • your brand suffers if customers can’t access your site or become casualties of a data breach.
   • preventions
     • • Strong security software
       • • Packet filters on routers.
         • • Configuration of the webserver.
           • • Good network policy
   • Flooding a server with useless traffic causes servers to become overloaded preventing them responding to legitimate client-server requests from users