– In the past, often for “fame” and/or “fun”
e.g., defacing web pages
fast and large-scale spreading
Modern Malware
– now, often for profit and political gains
– Technical sophistication based on the latest technologies
– Efficiency, robustness, and evasiveness
Botnet
-Bot(zombie)
A compromised computer under the control of an attacker
Bot code(malware) on the computer communicates with the attacker’s server and carries out malicious activities per attacker’s instructions
Botnet
A network of bots controlled by an attacker to perform coordinated malicious activities
Key platform for most Internet-based attacks and frauds
Attacks and Frauds by Botnets
spam, distributed denial of service attacks, key logging & data/Identity theft, click fraud, phishing& pharming, Cheating in online games/polls, key/password cracking, Anonymized terrorist & criminal communication
DDos using botnets
Attacker, Bots/zombies, Syn flood,etc. Victim
