Peter, a software programmer who regularly donated to charities, received an e-mail from an unknown charitable organization. The e-mail contained an attached PowerPoint presentation with the subject Demo of our charity work. After completing his work before leaving for the day, he downloaded the presentation. The presentation showed images of poor people who were waiting to be served. The next day when the programmer went to his office, he switched on his system as usual. To his surprise, the system was not working. It was hanging frequently and displayed strange error messages. He suspected a virus attack on the system, so he installed antivirus software. He scanned the system and found that it had been infected with a virus.

1. What are the dangers of opening an attachment from an unknown source?
2. What could be the potential losses for both Peter and the company he works for?
3. Name some possible preventative actions that could be taken, before and after the attack