Introduction of computer security
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Introduction of computer security
- 2. COMPUTER SECRITY o Computer and network security was not at all well known,even about 12 years ago o Today ,it is something everyone is aware of the need ,but nit sure what is really means o Interesting topic of threads ,counter measures risks,stories,events and paranoia
- 3. MEDIA STORIES o Consumers are bombarded with media reports narrating dangers of the online world o IDENTITY THEFT o EMBEZZIEMENT AND FRAUD o CREDIT CARD THEFT o CORPORATE LOSS
- 4. GOALS OF COMPUTER SECURITY o INTEGRITY o Guarantee that the data is what we except o CONFIDENTIALITY o The information must just be accessible to the authorized people o RELIABILITY o Computer should work without having unexpected problems o AUTHENTICATION o Guarantee that only authorized persons can access to the resource
- 5. SECURITY BASICS WHAT DOES IT MEANS TO BE SECURE ???? o “Include protection of information from theft or corruption or the preservation of availability as defined in the security policy.” o TYPES OF SECURITY o Network security o System and software security o Physical security o Software cannot protect software (may be hardware can ) o Networks can be protected better than software
- 6. SOME OF TYPES ATTACK SOME COMMON ATTACKS Network attacks o Packet sniffing man –in –the middle, DNS hacking Web attacks o Phishing , SQL injection ,cross site scripting OS , Application and software attacks o Virus , trojans , worms , rootkits , buffer overflow Social Engineering o (NOT social networking)
- 7. NETWORK ATTACKS o PACKET SNIFFING o Internet traffic consists of the data “PACKETS” an these can be “SNIFFED” o Leads to other attacks such as password sniffing ,cookie stealing session hijacking information technology o MAN IN THE MIDDLE o Insert a router in the path between client and server and change the packet as they pass through o DNS HIJACKING o Insert malicious routers in DNS tablets TO send traffic for genuine sites to malicious sites
- 8. WEB ATTACKS